test/hotspot/jtreg/vmTestbase/nsk/monitoring/ThreadMXBean/GetThreadAllocatedBytes/StressTest.README
author iignatyev
Wed, 02 May 2018 16:43:56 -0700
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8199375: [TESTBUG] Open source vm testbase monitoring tests Reviewed-by: kvn, ihse, sspitsyn
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Copyright (c) 2011, 2018, 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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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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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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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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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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DESCRIPTION
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    Tests getThreadAllocatedBytes(long[] id) function of com.sun.management.ThreadMXBean
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    This test starts several threads (according test machine processor count). Each
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    thread allocates different size objects (from 8 bytes to 2 megabytes) during
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    defined Stresser time (default is 1 minute). After that for each thread allocated
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    memory is counted and compared to the result of getThreadAllocatedBytes() call.
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    Test is executed in following configurations:
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    ThreadMXBean is accessed
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      - directly threw ManagementFactory.getThreadMXBean()
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      - threw default MBeanServer
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      - threw custom MBeanServer
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      - threw default Proxy
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      - threw custom Proxy
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COMMENTS