author | redestad |
Thu, 17 Oct 2019 00:19:02 +0200 | |
changeset 58655 | 21a92562f0c2 |
parent 57875 | 427b38332f20 |
child 58679 | 9c3209ff7550 |
child 58874 | c440a6b4e096 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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#include <string.h> |
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#include <math.h> |
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#include <errno.h> |
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#include "utilities/globalDefinitions.hpp" |
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#include "memory/allocation.hpp" |
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#include "runtime/globals.hpp" |
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#include "runtime/os.hpp" |
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#include "logging/log.hpp" |
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#include "osContainer_linux.hpp" |
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* PER_CPU_SHARES has been set to 1024 because CPU shares' quota |
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* is commonly used in cloud frameworks like Kubernetes[1], |
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* AWS[2] and Mesos[3] in a similar way. They spawn containers with |
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* --cpu-shares option values scaled by PER_CPU_SHARES. Thus, we do |
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* the inverse for determining the number of possible available |
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* CPUs to the JVM inside a container. See JDK-8216366. |
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* |
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* [1] https://kubernetes.io/docs/concepts/configuration/manage-compute-resources-container/#meaning-of-cpu |
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* In particular: |
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* When using Docker: |
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* The spec.containers[].resources.requests.cpu is converted to its core value, which is potentially |
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* fractional, and multiplied by 1024. The greater of this number or 2 is used as the value of the |
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* --cpu-shares flag in the docker run command. |
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* [2] https://docs.aws.amazon.com/AmazonECS/latest/APIReference/API_ContainerDefinition.html |
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* [3] https://github.com/apache/mesos/blob/3478e344fb77d931f6122980c6e94cd3913c441d/src/docker/docker.cpp#L648 |
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* https://github.com/apache/mesos/blob/3478e344fb77d931f6122980c6e94cd3913c441d/src/slave/containerizer/mesos/isolators/cgroups/constants.hpp#L30 |
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*/ |
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#define PER_CPU_SHARES 1024 |
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bool OSContainer::_is_initialized = false; |
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bool OSContainer::_is_containerized = false; |
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julong _unlimited_memory; |
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class CgroupSubsystem: CHeapObj<mtInternal> { |
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friend class OSContainer; |
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private: |
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/* mountinfo contents */ |
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char *_root; |
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char *_mount_point; |
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/* Constructed subsystem directory */ |
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char *_path; |
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CgroupSubsystem(char *root, char *mountpoint) { |
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_root = os::strdup(root); |
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_mount_point = os::strdup(mountpoint); |
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_path = NULL; |
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} |
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/* |
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* Set directory to subsystem specific files based |
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* on the contents of the mountinfo and cgroup files. |
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*/ |
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void set_subsystem_path(char *cgroup_path) { |
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char buf[MAXPATHLEN+1]; |
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if (_root != NULL && cgroup_path != NULL) { |
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if (strcmp(_root, "/") == 0) { |
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int buflen; |
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strncpy(buf, _mount_point, MAXPATHLEN); |
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buf[MAXPATHLEN-1] = '\0'; |
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if (strcmp(cgroup_path,"/") != 0) { |
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buflen = strlen(buf); |
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if ((buflen + strlen(cgroup_path)) > (MAXPATHLEN-1)) { |
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return; |
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} |
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strncat(buf, cgroup_path, MAXPATHLEN-buflen); |
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buf[MAXPATHLEN-1] = '\0'; |
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} |
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_path = os::strdup(buf); |
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} else { |
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if (strcmp(_root, cgroup_path) == 0) { |
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strncpy(buf, _mount_point, MAXPATHLEN); |
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buf[MAXPATHLEN-1] = '\0'; |
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_path = os::strdup(buf); |
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} else { |
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char *p = strstr(cgroup_path, _root); |
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if (p != NULL && p == _root) { |
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if (strlen(cgroup_path) > strlen(_root)) { |
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int buflen; |
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strncpy(buf, _mount_point, MAXPATHLEN); |
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buf[MAXPATHLEN-1] = '\0'; |
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buflen = strlen(buf); |
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if ((buflen + strlen(cgroup_path) - strlen(_root)) > (MAXPATHLEN-1)) { |
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return; |
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} |
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strncat(buf, cgroup_path + strlen(_root), MAXPATHLEN-buflen); |
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buf[MAXPATHLEN-1] = '\0'; |
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_path = os::strdup(buf); |
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} |
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} |
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} |
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} |
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} |
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} |
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char *subsystem_path() { return _path; } |
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}; |
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class CgroupMemorySubsystem: CgroupSubsystem { |
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friend class OSContainer; |
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private: |
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/* Some container runtimes set limits via cgroup |
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* hierarchy. If set to true consider also memory.stat |
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* file if everything else seems unlimited */ |
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bool _uses_mem_hierarchy; |
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volatile jlong _memory_limit_in_bytes; |
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volatile jlong _next_check_counter; |
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public: |
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CgroupMemorySubsystem(char *root, char *mountpoint) : CgroupSubsystem::CgroupSubsystem(root, mountpoint) { |
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_uses_mem_hierarchy = false; |
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_memory_limit_in_bytes = -1; |
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_next_check_counter = min_jlong; |
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} |
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bool is_hierarchical() { return _uses_mem_hierarchy; } |
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void set_hierarchical(bool value) { _uses_mem_hierarchy = value; } |
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147 |
|
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bool should_check_memory_limit() { |
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return os::elapsed_counter() > _next_check_counter; |
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} |
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151 |
jlong memory_limit_in_bytes() { return _memory_limit_in_bytes; } |
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void set_memory_limit_in_bytes(jlong value) { |
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_memory_limit_in_bytes = value; |
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// max memory limit is unlikely to change, but we want to remain |
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// responsive to configuration changes. A very short (20ms) grace time |
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// between re-read avoids excessive overhead during startup without |
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// significantly reducing the VMs ability to promptly react to reduced |
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158 |
// memory availability |
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_next_check_counter = os::elapsed_counter() + (NANOSECS_PER_SEC/50); |
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160 |
} |
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161 |
|
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162 |
}; |
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163 |
|
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164 |
CgroupMemorySubsystem* memory = NULL; |
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CgroupSubsystem* cpuset = NULL; |
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CgroupSubsystem* cpu = NULL; |
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167 |
CgroupSubsystem* cpuacct = NULL; |
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168 |
|
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typedef char * cptr; |
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170 |
|
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171 |
PRAGMA_DIAG_PUSH |
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PRAGMA_FORMAT_NONLITERAL_IGNORED |
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173 |
template <typename T> int subsystem_file_line_contents(CgroupSubsystem* c, |
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const char *filename, |
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175 |
const char *matchline, |
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const char *scan_fmt, |
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177 |
T returnval) { |
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FILE *fp = NULL; |
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179 |
char *p; |
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char file[MAXPATHLEN+1]; |
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181 |
char buf[MAXPATHLEN+1]; |
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182 |
char discard[MAXPATHLEN+1]; |
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183 |
bool found_match = false; |
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184 |
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185 |
if (c == NULL) { |
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log_debug(os, container)("subsystem_file_line_contents: CgroupSubsytem* is NULL"); |
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return OSCONTAINER_ERROR; |
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188 |
} |
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189 |
if (c->subsystem_path() == NULL) { |
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log_debug(os, container)("subsystem_file_line_contents: subsystem path is NULL"); |
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return OSCONTAINER_ERROR; |
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192 |
} |
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193 |
|
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strncpy(file, c->subsystem_path(), MAXPATHLEN); |
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file[MAXPATHLEN-1] = '\0'; |
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196 |
int filelen = strlen(file); |
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197 |
if ((filelen + strlen(filename)) > (MAXPATHLEN-1)) { |
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log_debug(os, container)("File path too long %s, %s", file, filename); |
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199 |
return OSCONTAINER_ERROR; |
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200 |
} |
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201 |
strncat(file, filename, MAXPATHLEN-filelen); |
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log_trace(os, container)("Path to %s is %s", filename, file); |
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fp = fopen(file, "r"); |
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if (fp != NULL) { |
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int err = 0; |
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206 |
while ((p = fgets(buf, MAXPATHLEN, fp)) != NULL) { |
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207 |
found_match = false; |
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208 |
if (matchline == NULL) { |
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209 |
// single-line file case |
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int matched = sscanf(p, scan_fmt, returnval); |
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found_match = (matched == 1); |
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212 |
} else { |
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213 |
// multi-line file case |
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214 |
if (strstr(p, matchline) != NULL) { |
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215 |
// discard matchline string prefix |
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int matched = sscanf(p, scan_fmt, discard, returnval); |
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found_match = (matched == 2); |
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218 |
} else { |
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continue; // substring not found |
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220 |
} |
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221 |
} |
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222 |
if (found_match) { |
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223 |
fclose(fp); |
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224 |
return 0; |
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225 |
} else { |
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226 |
err = 1; |
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log_debug(os, container)("Type %s not found in file %s", scan_fmt, file); |
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228 |
} |
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229 |
} |
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230 |
if (err == 0) { |
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log_debug(os, container)("Empty file %s", file); |
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} |
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233 |
} else { |
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log_debug(os, container)("Open of file %s failed, %s", file, os::strerror(errno)); |
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} |
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236 |
if (fp != NULL) |
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237 |
fclose(fp); |
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238 |
return OSCONTAINER_ERROR; |
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239 |
} |
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240 |
PRAGMA_DIAG_POP |
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241 |
|
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242 |
#define GET_CONTAINER_INFO(return_type, subsystem, filename, \ |
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logstring, scan_fmt, variable) \ |
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244 |
return_type variable; \ |
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245 |
{ \ |
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int err; \ |
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err = subsystem_file_line_contents(subsystem, \ |
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248 |
filename, \ |
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249 |
NULL, \ |
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250 |
scan_fmt, \ |
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251 |
&variable); \ |
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252 |
if (err != 0) \ |
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253 |
return (return_type) OSCONTAINER_ERROR; \ |
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254 |
\ |
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255 |
log_trace(os, container)(logstring, variable); \ |
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256 |
} |
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257 |
|
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258 |
#define GET_CONTAINER_INFO_CPTR(return_type, subsystem, filename, \ |
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259 |
logstring, scan_fmt, variable, bufsize) \ |
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260 |
char variable[bufsize]; \ |
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261 |
{ \ |
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262 |
int err; \ |
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err = subsystem_file_line_contents(subsystem, \ |
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264 |
filename, \ |
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265 |
NULL, \ |
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266 |
scan_fmt, \ |
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267 |
variable); \ |
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268 |
if (err != 0) \ |
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269 |
return (return_type) NULL; \ |
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270 |
\ |
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271 |
log_trace(os, container)(logstring, variable); \ |
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272 |
} |
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273 |
|
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|
274 |
#define GET_CONTAINER_INFO_LINE(return_type, subsystem, filename, \ |
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|
275 |
matchline, logstring, scan_fmt, variable) \ |
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|
276 |
return_type variable; \ |
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|
277 |
{ \ |
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|
278 |
int err; \ |
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|
279 |
err = subsystem_file_line_contents(subsystem, \ |
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|
280 |
filename, \ |
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parents:
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diff
changeset
|
281 |
matchline, \ |
1c242c2d037f
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parents:
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diff
changeset
|
282 |
scan_fmt, \ |
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parents:
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diff
changeset
|
283 |
&variable); \ |
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|
284 |
if (err != 0) \ |
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|
285 |
return (return_type) OSCONTAINER_ERROR; \ |
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|
286 |
\ |
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|
287 |
log_trace(os, container)(logstring, variable); \ |
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|
288 |
} |
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|
289 |
|
47903
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changeset
|
290 |
/* init |
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changeset
|
291 |
* |
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parents:
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changeset
|
292 |
* Initialize the container support and determine if |
7f22774a5f42
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parents:
diff
changeset
|
293 |
* we are running under cgroup control. |
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changeset
|
294 |
*/ |
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|
295 |
void OSContainer::init() { |
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|
296 |
FILE *mntinfo = NULL; |
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parents:
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changeset
|
297 |
FILE *cgroup = NULL; |
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parents:
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changeset
|
298 |
char buf[MAXPATHLEN+1]; |
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parents:
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changeset
|
299 |
char tmproot[MAXPATHLEN+1]; |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
300 |
char tmpmount[MAXPATHLEN+1]; |
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parents:
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changeset
|
301 |
char *p; |
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parents:
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|
302 |
jlong mem_limit; |
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parents:
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changeset
|
303 |
|
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parents:
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changeset
|
304 |
assert(!_is_initialized, "Initializing OSContainer more than once"); |
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parents:
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changeset
|
305 |
|
7f22774a5f42
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bobv
parents:
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changeset
|
306 |
_is_initialized = true; |
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bobv
parents:
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changeset
|
307 |
_is_containerized = false; |
7f22774a5f42
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bobv
parents:
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changeset
|
308 |
|
48438 | 309 |
_unlimited_memory = (LONG_MAX / os::vm_page_size()) * os::vm_page_size(); |
310 |
||
47903
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|
311 |
log_trace(os, container)("OSContainer::init: Initializing Container Support"); |
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bobv
parents:
diff
changeset
|
312 |
if (!UseContainerSupport) { |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
313 |
log_trace(os, container)("Container Support not enabled"); |
7f22774a5f42
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bobv
parents:
diff
changeset
|
314 |
return; |
7f22774a5f42
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bobv
parents:
diff
changeset
|
315 |
} |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
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changeset
|
316 |
|
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
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changeset
|
317 |
/* |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
318 |
* Find the cgroup mount point for memory and cpuset |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
319 |
* by reading /proc/self/mountinfo |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
320 |
* |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
321 |
* Example for docker: |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
322 |
* 219 214 0:29 /docker/7208cebd00fa5f2e342b1094f7bed87fa25661471a4637118e65f1c995be8a34 /sys/fs/cgroup/memory ro,nosuid,nodev,noexec,relatime - cgroup cgroup rw,memory |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
323 |
* |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
324 |
* Example for host: |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
325 |
* 34 28 0:29 / /sys/fs/cgroup/memory rw,nosuid,nodev,noexec,relatime shared:16 - cgroup cgroup rw,memory |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
326 |
*/ |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
327 |
mntinfo = fopen("/proc/self/mountinfo", "r"); |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
328 |
if (mntinfo == NULL) { |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
329 |
log_debug(os, container)("Can't open /proc/self/mountinfo, %s", |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
330 |
os::strerror(errno)); |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
331 |
return; |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
332 |
} |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
333 |
|
54193
d5da034032e9
8217766: Container Support doesn't work for some Join Controllers combinations
bobv
parents:
54191
diff
changeset
|
334 |
while ((p = fgets(buf, MAXPATHLEN, mntinfo)) != NULL) { |
d5da034032e9
8217766: Container Support doesn't work for some Join Controllers combinations
bobv
parents:
54191
diff
changeset
|
335 |
char tmpcgroups[MAXPATHLEN+1]; |
d5da034032e9
8217766: Container Support doesn't work for some Join Controllers combinations
bobv
parents:
54191
diff
changeset
|
336 |
char *cptr = tmpcgroups; |
d5da034032e9
8217766: Container Support doesn't work for some Join Controllers combinations
bobv
parents:
54191
diff
changeset
|
337 |
char *token; |
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
338 |
|
54193
d5da034032e9
8217766: Container Support doesn't work for some Join Controllers combinations
bobv
parents:
54191
diff
changeset
|
339 |
// mountinfo format is documented at https://www.kernel.org/doc/Documentation/filesystems/proc.txt |
d5da034032e9
8217766: Container Support doesn't work for some Join Controllers combinations
bobv
parents:
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diff
changeset
|
340 |
if (sscanf(p, "%*d %*d %*d:%*d %s %s %*[^-]- cgroup %*s %s", tmproot, tmpmount, tmpcgroups) != 3) { |
d5da034032e9
8217766: Container Support doesn't work for some Join Controllers combinations
bobv
parents:
54191
diff
changeset
|
341 |
continue; |
d5da034032e9
8217766: Container Support doesn't work for some Join Controllers combinations
bobv
parents:
54191
diff
changeset
|
342 |
} |
d5da034032e9
8217766: Container Support doesn't work for some Join Controllers combinations
bobv
parents:
54191
diff
changeset
|
343 |
while ((token = strsep(&cptr, ",")) != NULL) { |
d5da034032e9
8217766: Container Support doesn't work for some Join Controllers combinations
bobv
parents:
54191
diff
changeset
|
344 |
if (strcmp(token, "memory") == 0) { |
54577
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
345 |
memory = new CgroupMemorySubsystem(tmproot, tmpmount); |
54193
d5da034032e9
8217766: Container Support doesn't work for some Join Controllers combinations
bobv
parents:
54191
diff
changeset
|
346 |
} else if (strcmp(token, "cpuset") == 0) { |
d5da034032e9
8217766: Container Support doesn't work for some Join Controllers combinations
bobv
parents:
54191
diff
changeset
|
347 |
cpuset = new CgroupSubsystem(tmproot, tmpmount); |
d5da034032e9
8217766: Container Support doesn't work for some Join Controllers combinations
bobv
parents:
54191
diff
changeset
|
348 |
} else if (strcmp(token, "cpu") == 0) { |
d5da034032e9
8217766: Container Support doesn't work for some Join Controllers combinations
bobv
parents:
54191
diff
changeset
|
349 |
cpu = new CgroupSubsystem(tmproot, tmpmount); |
d5da034032e9
8217766: Container Support doesn't work for some Join Controllers combinations
bobv
parents:
54191
diff
changeset
|
350 |
} else if (strcmp(token, "cpuacct") == 0) { |
d5da034032e9
8217766: Container Support doesn't work for some Join Controllers combinations
bobv
parents:
54191
diff
changeset
|
351 |
cpuacct= new CgroupSubsystem(tmproot, tmpmount); |
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
352 |
} |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
353 |
} |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
354 |
} |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
355 |
|
48161
fed0e4b11604
8192154: JVM crashes inside some chroot environments on linux
bobv
parents:
47903
diff
changeset
|
356 |
fclose(mntinfo); |
fed0e4b11604
8192154: JVM crashes inside some chroot environments on linux
bobv
parents:
47903
diff
changeset
|
357 |
|
48880
ee49ac008730
8196062: Enable docker container related tests for linux ppc64le
mbaesken
parents:
48438
diff
changeset
|
358 |
if (memory == NULL) { |
ee49ac008730
8196062: Enable docker container related tests for linux ppc64le
mbaesken
parents:
48438
diff
changeset
|
359 |
log_debug(os, container)("Required cgroup memory subsystem not found"); |
ee49ac008730
8196062: Enable docker container related tests for linux ppc64le
mbaesken
parents:
48438
diff
changeset
|
360 |
return; |
ee49ac008730
8196062: Enable docker container related tests for linux ppc64le
mbaesken
parents:
48438
diff
changeset
|
361 |
} |
ee49ac008730
8196062: Enable docker container related tests for linux ppc64le
mbaesken
parents:
48438
diff
changeset
|
362 |
if (cpuset == NULL) { |
ee49ac008730
8196062: Enable docker container related tests for linux ppc64le
mbaesken
parents:
48438
diff
changeset
|
363 |
log_debug(os, container)("Required cgroup cpuset subsystem not found"); |
ee49ac008730
8196062: Enable docker container related tests for linux ppc64le
mbaesken
parents:
48438
diff
changeset
|
364 |
return; |
ee49ac008730
8196062: Enable docker container related tests for linux ppc64le
mbaesken
parents:
48438
diff
changeset
|
365 |
} |
ee49ac008730
8196062: Enable docker container related tests for linux ppc64le
mbaesken
parents:
48438
diff
changeset
|
366 |
if (cpu == NULL) { |
ee49ac008730
8196062: Enable docker container related tests for linux ppc64le
mbaesken
parents:
48438
diff
changeset
|
367 |
log_debug(os, container)("Required cgroup cpu subsystem not found"); |
ee49ac008730
8196062: Enable docker container related tests for linux ppc64le
mbaesken
parents:
48438
diff
changeset
|
368 |
return; |
ee49ac008730
8196062: Enable docker container related tests for linux ppc64le
mbaesken
parents:
48438
diff
changeset
|
369 |
} |
ee49ac008730
8196062: Enable docker container related tests for linux ppc64le
mbaesken
parents:
48438
diff
changeset
|
370 |
if (cpuacct == NULL) { |
ee49ac008730
8196062: Enable docker container related tests for linux ppc64le
mbaesken
parents:
48438
diff
changeset
|
371 |
log_debug(os, container)("Required cgroup cpuacct subsystem not found"); |
48161
fed0e4b11604
8192154: JVM crashes inside some chroot environments on linux
bobv
parents:
47903
diff
changeset
|
372 |
return; |
fed0e4b11604
8192154: JVM crashes inside some chroot environments on linux
bobv
parents:
47903
diff
changeset
|
373 |
} |
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
374 |
|
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
375 |
/* |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
376 |
* Read /proc/self/cgroup and map host mount point to |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
377 |
* local one via /proc/self/mountinfo content above |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
378 |
* |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
379 |
* Docker example: |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
380 |
* 5:memory:/docker/6558aed8fc662b194323ceab5b964f69cf36b3e8af877a14b80256e93aecb044 |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
381 |
* |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
382 |
* Host example: |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
383 |
* 5:memory:/user.slice |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
384 |
* |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
385 |
* Construct a path to the process specific memory and cpuset |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
386 |
* cgroup directory. |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
387 |
* |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
388 |
* For a container running under Docker from memory example above |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
389 |
* the paths would be: |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
390 |
* |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
391 |
* /sys/fs/cgroup/memory |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
392 |
* |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
393 |
* For a Host from memory example above the path would be: |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
394 |
* |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
395 |
* /sys/fs/cgroup/memory/user.slice |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
396 |
* |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
397 |
*/ |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
398 |
cgroup = fopen("/proc/self/cgroup", "r"); |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
399 |
if (cgroup == NULL) { |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
400 |
log_debug(os, container)("Can't open /proc/self/cgroup, %s", |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
401 |
os::strerror(errno)); |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
402 |
return; |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
403 |
} |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
404 |
|
54193
d5da034032e9
8217766: Container Support doesn't work for some Join Controllers combinations
bobv
parents:
54191
diff
changeset
|
405 |
while ((p = fgets(buf, MAXPATHLEN, cgroup)) != NULL) { |
d5da034032e9
8217766: Container Support doesn't work for some Join Controllers combinations
bobv
parents:
54191
diff
changeset
|
406 |
char *controllers; |
d5da034032e9
8217766: Container Support doesn't work for some Join Controllers combinations
bobv
parents:
54191
diff
changeset
|
407 |
char *token; |
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
408 |
char *base; |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
409 |
|
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
410 |
/* Skip cgroup number */ |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
411 |
strsep(&p, ":"); |
54193
d5da034032e9
8217766: Container Support doesn't work for some Join Controllers combinations
bobv
parents:
54191
diff
changeset
|
412 |
/* Get controllers and base */ |
d5da034032e9
8217766: Container Support doesn't work for some Join Controllers combinations
bobv
parents:
54191
diff
changeset
|
413 |
controllers = strsep(&p, ":"); |
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
414 |
base = strsep(&p, "\n"); |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
415 |
|
54193
d5da034032e9
8217766: Container Support doesn't work for some Join Controllers combinations
bobv
parents:
54191
diff
changeset
|
416 |
if (controllers == NULL) { |
d5da034032e9
8217766: Container Support doesn't work for some Join Controllers combinations
bobv
parents:
54191
diff
changeset
|
417 |
continue; |
d5da034032e9
8217766: Container Support doesn't work for some Join Controllers combinations
bobv
parents:
54191
diff
changeset
|
418 |
} |
d5da034032e9
8217766: Container Support doesn't work for some Join Controllers combinations
bobv
parents:
54191
diff
changeset
|
419 |
|
d5da034032e9
8217766: Container Support doesn't work for some Join Controllers combinations
bobv
parents:
54191
diff
changeset
|
420 |
while ((token = strsep(&controllers, ",")) != NULL) { |
d5da034032e9
8217766: Container Support doesn't work for some Join Controllers combinations
bobv
parents:
54191
diff
changeset
|
421 |
if (strcmp(token, "memory") == 0) { |
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
422 |
memory->set_subsystem_path(base); |
54577
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
423 |
jlong hierarchy = uses_mem_hierarchy(); |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
424 |
if (hierarchy > 0) { |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
425 |
memory->set_hierarchical(true); |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
426 |
} |
54193
d5da034032e9
8217766: Container Support doesn't work for some Join Controllers combinations
bobv
parents:
54191
diff
changeset
|
427 |
} else if (strcmp(token, "cpuset") == 0) { |
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
428 |
cpuset->set_subsystem_path(base); |
54193
d5da034032e9
8217766: Container Support doesn't work for some Join Controllers combinations
bobv
parents:
54191
diff
changeset
|
429 |
} else if (strcmp(token, "cpu") == 0) { |
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
430 |
cpu->set_subsystem_path(base); |
54193
d5da034032e9
8217766: Container Support doesn't work for some Join Controllers combinations
bobv
parents:
54191
diff
changeset
|
431 |
} else if (strcmp(token, "cpuacct") == 0) { |
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
432 |
cpuacct->set_subsystem_path(base); |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
433 |
} |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
434 |
} |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
435 |
} |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
436 |
|
48161
fed0e4b11604
8192154: JVM crashes inside some chroot environments on linux
bobv
parents:
47903
diff
changeset
|
437 |
fclose(cgroup); |
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
438 |
|
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
439 |
// We need to update the amount of physical memory now that |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
440 |
// command line arguments have been processed. |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
441 |
if ((mem_limit = memory_limit_in_bytes()) > 0) { |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
442 |
os::Linux::set_physical_memory(mem_limit); |
54577
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
443 |
log_info(os, container)("Memory Limit is: " JLONG_FORMAT, mem_limit); |
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
444 |
} |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
445 |
|
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
446 |
_is_containerized = true; |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
447 |
|
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
448 |
} |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
449 |
|
49175
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
49058
diff
changeset
|
450 |
const char * OSContainer::container_type() { |
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
451 |
if (is_containerized()) { |
49175
6a5decfc5574
8197408: Bad pointer comparison and small cleanup in os_linux.cpp
rehn
parents:
49058
diff
changeset
|
452 |
return "cgroupv1"; |
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
453 |
} else { |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
454 |
return NULL; |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
455 |
} |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
456 |
} |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
457 |
|
54577
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
458 |
/* uses_mem_hierarchy |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
459 |
* |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
460 |
* Return whether or not hierarchical cgroup accounting is being |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
461 |
* done. |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
462 |
* |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
463 |
* return: |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
464 |
* A number > 0 if true, or |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
465 |
* OSCONTAINER_ERROR for not supported |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
466 |
*/ |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
467 |
jlong OSContainer::uses_mem_hierarchy() { |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
468 |
GET_CONTAINER_INFO(jlong, memory, "/memory.use_hierarchy", |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
469 |
"Use Hierarchy is: " JLONG_FORMAT, JLONG_FORMAT, use_hierarchy); |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
470 |
return use_hierarchy; |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
471 |
} |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
472 |
|
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
473 |
|
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
474 |
/* memory_limit_in_bytes |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
475 |
* |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
476 |
* Return the limit of available memory for this process. |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
477 |
* |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
478 |
* return: |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
479 |
* memory limit in bytes or |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
480 |
* -1 for unlimited |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
481 |
* OSCONTAINER_ERROR for not supported |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
482 |
*/ |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
483 |
jlong OSContainer::memory_limit_in_bytes() { |
58655
21a92562f0c2
8232207: Linux os::available_memory re-reads cgroup configuration on every invocation
redestad
parents:
57875
diff
changeset
|
484 |
if (!memory->should_check_memory_limit()) { |
21a92562f0c2
8232207: Linux os::available_memory re-reads cgroup configuration on every invocation
redestad
parents:
57875
diff
changeset
|
485 |
return memory->memory_limit_in_bytes(); |
21a92562f0c2
8232207: Linux os::available_memory re-reads cgroup configuration on every invocation
redestad
parents:
57875
diff
changeset
|
486 |
} |
21a92562f0c2
8232207: Linux os::available_memory re-reads cgroup configuration on every invocation
redestad
parents:
57875
diff
changeset
|
487 |
jlong memory_limit = read_memory_limit_in_bytes(); |
21a92562f0c2
8232207: Linux os::available_memory re-reads cgroup configuration on every invocation
redestad
parents:
57875
diff
changeset
|
488 |
// Update CgroupMemorySubsystem to avoid re-reading container settings too often |
21a92562f0c2
8232207: Linux os::available_memory re-reads cgroup configuration on every invocation
redestad
parents:
57875
diff
changeset
|
489 |
memory->set_memory_limit_in_bytes(memory_limit); |
21a92562f0c2
8232207: Linux os::available_memory re-reads cgroup configuration on every invocation
redestad
parents:
57875
diff
changeset
|
490 |
return memory_limit; |
21a92562f0c2
8232207: Linux os::available_memory re-reads cgroup configuration on every invocation
redestad
parents:
57875
diff
changeset
|
491 |
} |
21a92562f0c2
8232207: Linux os::available_memory re-reads cgroup configuration on every invocation
redestad
parents:
57875
diff
changeset
|
492 |
|
21a92562f0c2
8232207: Linux os::available_memory re-reads cgroup configuration on every invocation
redestad
parents:
57875
diff
changeset
|
493 |
jlong OSContainer::read_memory_limit_in_bytes() { |
48438 | 494 |
GET_CONTAINER_INFO(julong, memory, "/memory.limit_in_bytes", |
495 |
"Memory Limit is: " JULONG_FORMAT, JULONG_FORMAT, memlimit); |
|
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
496 |
|
48438 | 497 |
if (memlimit >= _unlimited_memory) { |
54577
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
498 |
log_trace(os, container)("Non-Hierarchical Memory Limit is: Unlimited"); |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
499 |
if (memory->is_hierarchical()) { |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
500 |
const char* matchline = "hierarchical_memory_limit"; |
54810 | 501 |
const char* format = "%s " JULONG_FORMAT; |
54577
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
502 |
GET_CONTAINER_INFO_LINE(julong, memory, "/memory.stat", matchline, |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
503 |
"Hierarchical Memory Limit is: " JULONG_FORMAT, format, hier_memlimit) |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
504 |
if (hier_memlimit >= _unlimited_memory) { |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
505 |
log_trace(os, container)("Hierarchical Memory Limit is: Unlimited"); |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
506 |
} else { |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
507 |
return (jlong)hier_memlimit; |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
508 |
} |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
509 |
} |
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
510 |
return (jlong)-1; |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
511 |
} |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
512 |
else { |
48438 | 513 |
return (jlong)memlimit; |
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
514 |
} |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
515 |
} |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
516 |
|
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
517 |
jlong OSContainer::memory_and_swap_limit_in_bytes() { |
48438 | 518 |
GET_CONTAINER_INFO(julong, memory, "/memory.memsw.limit_in_bytes", |
519 |
"Memory and Swap Limit is: " JULONG_FORMAT, JULONG_FORMAT, memswlimit); |
|
520 |
if (memswlimit >= _unlimited_memory) { |
|
54577
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
521 |
log_trace(os, container)("Non-Hierarchical Memory and Swap Limit is: Unlimited"); |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
522 |
if (memory->is_hierarchical()) { |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
523 |
const char* matchline = "hierarchical_memsw_limit"; |
54810 | 524 |
const char* format = "%s " JULONG_FORMAT; |
54577
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
525 |
GET_CONTAINER_INFO_LINE(julong, memory, "/memory.stat", matchline, |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
526 |
"Hierarchical Memory and Swap Limit is : " JULONG_FORMAT, format, hier_memlimit) |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
527 |
if (hier_memlimit >= _unlimited_memory) { |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
528 |
log_trace(os, container)("Hierarchical Memory and Swap Limit is: Unlimited"); |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
529 |
} else { |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
530 |
return (jlong)hier_memlimit; |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
531 |
} |
1c242c2d037f
8217338: [Containers] Improve systemd slice memory limit support
sgehwolf
parents:
54193
diff
changeset
|
532 |
} |
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
533 |
return (jlong)-1; |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
534 |
} else { |
48438 | 535 |
return (jlong)memswlimit; |
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
536 |
} |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
537 |
} |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
538 |
|
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
539 |
jlong OSContainer::memory_soft_limit_in_bytes() { |
48438 | 540 |
GET_CONTAINER_INFO(julong, memory, "/memory.soft_limit_in_bytes", |
541 |
"Memory Soft Limit is: " JULONG_FORMAT, JULONG_FORMAT, memsoftlimit); |
|
542 |
if (memsoftlimit >= _unlimited_memory) { |
|
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
543 |
log_trace(os, container)("Memory Soft Limit is: Unlimited"); |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
544 |
return (jlong)-1; |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
545 |
} else { |
48438 | 546 |
return (jlong)memsoftlimit; |
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
547 |
} |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
548 |
} |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
549 |
|
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
550 |
/* memory_usage_in_bytes |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
551 |
* |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
552 |
* Return the amount of used memory for this process. |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
553 |
* |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
554 |
* return: |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
555 |
* memory usage in bytes or |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
556 |
* -1 for unlimited |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
557 |
* OSCONTAINER_ERROR for not supported |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
558 |
*/ |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
559 |
jlong OSContainer::memory_usage_in_bytes() { |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
560 |
GET_CONTAINER_INFO(jlong, memory, "/memory.usage_in_bytes", |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
561 |
"Memory Usage is: " JLONG_FORMAT, JLONG_FORMAT, memusage); |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
562 |
return memusage; |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
563 |
} |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
564 |
|
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
565 |
/* memory_max_usage_in_bytes |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
566 |
* |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
567 |
* Return the maximum amount of used memory for this process. |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
568 |
* |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
569 |
* return: |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
570 |
* max memory usage in bytes or |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
571 |
* OSCONTAINER_ERROR for not supported |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
572 |
*/ |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
573 |
jlong OSContainer::memory_max_usage_in_bytes() { |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
574 |
GET_CONTAINER_INFO(jlong, memory, "/memory.max_usage_in_bytes", |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
575 |
"Maximum Memory Usage is: " JLONG_FORMAT, JLONG_FORMAT, memmaxusage); |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
576 |
return memmaxusage; |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
577 |
} |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
578 |
|
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
579 |
/* active_processor_count |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
580 |
* |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
581 |
* Calculate an appropriate number of active processors for the |
49058
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
582 |
* VM to use based on these three inputs. |
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
583 |
* |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
584 |
* cpu affinity |
49058
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
585 |
* cgroup cpu quota & cpu period |
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
586 |
* cgroup cpu shares |
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
587 |
* |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
588 |
* Algorithm: |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
589 |
* |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
590 |
* Determine the number of available CPUs from sched_getaffinity |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
591 |
* |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
592 |
* If user specified a quota (quota != -1), calculate the number of |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
593 |
* required CPUs by dividing quota by period. |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
594 |
* |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
595 |
* If shares are in effect (shares != -1), calculate the number |
49058
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
596 |
* of CPUs required for the shares by dividing the share value |
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
597 |
* by PER_CPU_SHARES. |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
598 |
* |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
599 |
* All results of division are rounded up to the next whole number. |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
600 |
* |
49058
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
601 |
* If neither shares or quotas have been specified, return the |
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
602 |
* number of active processors in the system. |
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
603 |
* |
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
604 |
* If both shares and quotas have been specified, the results are |
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
605 |
* based on the flag PreferContainerQuotaForCPUCount. If true, |
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
606 |
* return the quota value. If false return the smallest value |
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
607 |
* between shares or quotas. |
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
608 |
* |
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
609 |
* If shares and/or quotas have been specified, the resulting number |
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
610 |
* returned will never exceed the number of active processors. |
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
611 |
* |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
612 |
* return: |
49058
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
613 |
* number of CPUs |
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
614 |
*/ |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
615 |
int OSContainer::active_processor_count() { |
49058
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
616 |
int quota_count = 0, share_count = 0; |
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
617 |
int cpu_count, limit_count; |
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
618 |
int result; |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
619 |
|
49058
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
620 |
cpu_count = limit_count = os::Linux::active_processor_count(); |
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
621 |
int quota = cpu_quota(); |
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
622 |
int period = cpu_period(); |
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
623 |
int share = cpu_shares(); |
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
624 |
|
49058
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
625 |
if (quota > -1 && period > 0) { |
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
626 |
quota_count = ceilf((float)quota / (float)period); |
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
627 |
log_trace(os, container)("CPU Quota count based on quota/period: %d", quota_count); |
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
628 |
} |
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
629 |
if (share > -1) { |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
630 |
share_count = ceilf((float)share / (float)PER_CPU_SHARES); |
49058
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
631 |
log_trace(os, container)("CPU Share count based on shares: %d", share_count); |
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
632 |
} |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
633 |
|
49058
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
634 |
// If both shares and quotas are setup results depend |
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
635 |
// on flag PreferContainerQuotaForCPUCount. |
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
636 |
// If true, limit CPU count to quota |
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
637 |
// If false, use minimum of shares and quotas |
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
638 |
if (quota_count !=0 && share_count != 0) { |
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
639 |
if (PreferContainerQuotaForCPUCount) { |
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
640 |
limit_count = quota_count; |
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
641 |
} else { |
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
642 |
limit_count = MIN2(quota_count, share_count); |
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
643 |
} |
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
644 |
} else if (quota_count != 0) { |
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
645 |
limit_count = quota_count; |
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
646 |
} else if (share_count != 0) { |
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
647 |
limit_count = share_count; |
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
648 |
} |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
649 |
|
49058
15765495db12
8197589: Update CPU count algorithm when both cpu shares and quotas are used
bobv
parents:
48880
diff
changeset
|
650 |
result = MIN2(cpu_count, limit_count); |
47903
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
651 |
log_trace(os, container)("OSContainer::active_processor_count: %d", result); |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
652 |
return result; |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
653 |
} |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
654 |
|
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
655 |
char * OSContainer::cpu_cpuset_cpus() { |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
656 |
GET_CONTAINER_INFO_CPTR(cptr, cpuset, "/cpuset.cpus", |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
657 |
"cpuset.cpus is: %s", "%1023s", cpus, 1024); |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
658 |
return os::strdup(cpus); |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
659 |
} |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
660 |
|
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
661 |
char * OSContainer::cpu_cpuset_memory_nodes() { |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
662 |
GET_CONTAINER_INFO_CPTR(cptr, cpuset, "/cpuset.mems", |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
663 |
"cpuset.mems is: %s", "%1023s", mems, 1024); |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
664 |
return os::strdup(mems); |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
665 |
} |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
666 |
|
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
667 |
/* cpu_quota |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
668 |
* |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
669 |
* Return the number of milliseconds per period |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
670 |
* process is guaranteed to run. |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
671 |
* |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
672 |
* return: |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
673 |
* quota time in milliseconds |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
674 |
* -1 for no quota |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
675 |
* OSCONTAINER_ERROR for not supported |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
676 |
*/ |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
677 |
int OSContainer::cpu_quota() { |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
678 |
GET_CONTAINER_INFO(int, cpu, "/cpu.cfs_quota_us", |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
679 |
"CPU Quota is: %d", "%d", quota); |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
680 |
return quota; |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
681 |
} |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
682 |
|
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
683 |
int OSContainer::cpu_period() { |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
684 |
GET_CONTAINER_INFO(int, cpu, "/cpu.cfs_period_us", |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
685 |
"CPU Period is: %d", "%d", period); |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
686 |
return period; |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
687 |
} |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
688 |
|
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
689 |
/* cpu_shares |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
690 |
* |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
691 |
* Return the amount of cpu shares available to the process |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
692 |
* |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
693 |
* return: |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
694 |
* Share number (typically a number relative to 1024) |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
695 |
* (2048 typically expresses 2 CPUs worth of processing) |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
696 |
* -1 for no share setup |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
697 |
* OSCONTAINER_ERROR for not supported |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
698 |
*/ |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
699 |
int OSContainer::cpu_shares() { |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
700 |
GET_CONTAINER_INFO(int, cpu, "/cpu.shares", |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
701 |
"CPU Shares is: %d", "%d", shares); |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
702 |
// Convert 1024 to no shares setup |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
703 |
if (shares == 1024) return -1; |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
704 |
|
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
705 |
return shares; |
7f22774a5f42
8146115: Improve docker container detection and resource configuration usage
bobv
parents:
diff
changeset
|
706 |
} |