#!/usr/sbin/dtrace -Zs
/*
* Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of Oracle nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
*/
/*
* Usage:
* 1. method_compile_stat.d -c "java ..." TOP_RESULTS_COUNT INTERVAL_SECS
* 2. method_compile_stat.d -p JAVA_PID TOP_RESULTS_COUNT INTERVAL_SECS
*
* This script prints statistics about TOP_RESULTS_COUNT (default is 25)
* methods with largest/smallest compilation time every INTERVAL_SECS
* (default is 60) seconds.
*
*/
#pragma D option quiet
#pragma D option destructive
#pragma D option defaultargs
#pragma D option aggrate=100ms
self char *str_ptr;
self string class_name;
self string method_name;
self string signature;
int INTERVAL_SECS;
:::BEGIN
{
SAMPLE_NAME = "hotspot methods compilation tracing";
TOP_RESULTS_COUNT = $1 ? $1 : 25;
INTERVAL_SECS = $2 ? $2 : 60;
COMPILED_METHODS_COUNT = 0;
LOADED_METHODS_CNT = 0;
UNLOADED_METHODS_CNT = 0;
SAMPLING_TIME = timestamp + INTERVAL_SECS * 1000000000ull;
LINE_SEP =
"------------------------------------------------------------------------";
printf("BEGIN %s\n\n", SAMPLE_NAME);
}
/*
* hotspot:::method-compile-begin
* arg0: char*, a pointer to mUTF-8 string containing the name of
* the compiler
* arg1: uintptr_t, the length of the compiler name (in bytes)
* arg2: char*, a pointer to mUTF-8 string containing the class name of
* the method being compiled
* arg3: uintptr_t, the length of the class name (in bytes)
* arg4: char*, a pointer to mUTF-8 string containing the method name of
* the method being compiled
* arg5: uintptr_t, the length of the method name (in bytes)
* arg6: char*, a pointer to mUTF-8 string containing the signature of
* the method being compiled
* arg7: uintptr_t, the length of the signature(in bytes)
*/
hotspot$target:::method-compile-begin
{
/*compiler_name, len, class_name, len, method_name, len, signature, len*/
self->str_ptr = (char*) copyin(arg0, arg1+1);
self->str_ptr[arg1] = '\0';
compiler_name = (string) self->str_ptr;
self->str_ptr = (char*) copyin(arg2, arg3+1);
self->str_ptr[arg3] = '\0';
self->class_name = (string) self->str_ptr;
self->str_ptr = (char*) copyin(arg4, arg5+1);
self->str_ptr[arg5] = '\0';
self->method_name = (string) self->str_ptr;
self->str_ptr = (char*) copyin(arg6, arg7+1);
self->str_ptr[arg7] = '\0';
self->signature = (string) self->str_ptr;
self->ts[self->class_name, self->method_name, self->signature] = timestamp;
}
/*
* hotspot:::method-compile-end
* arg0: char*, a pointer to mUTF-8 string containing the name of
* the compiler
* arg1: uintptr_t, the length of the compiler name (in bytes)
* arg2: char*, a pointer to mUTF-8 string containing the class name of
* the method being compiled
* arg3: uintptr_t, the length of the class name (in bytes)
* arg4: char*, a pointer to mUTF-8 string containing the method name of
* the method being compiled
* arg5: uintptr_t, the length of the method name (in bytes)
* arg6: char*, a pointer to mUTF-8 string containing the signature of
* the method being compiled
* arg7: uintptr_t, the length of the signature(in bytes)
* arg8: uintptr_t, boolean value which indicates if method
* has been compiled successfuly
*/
hotspot$target:::method-compile-end
{
/* compiler_name, len, class_name, len, method_name, len,
signature, len, isSuccess */
self->str_ptr = (char*) copyin(arg0, arg1+1);
self->str_ptr[arg1] = '\0';
compiler_name = (string) self->str_ptr;
self->str_ptr = (char*) copyin(arg2, arg3+1);
self->str_ptr[arg3] = '\0';
self->class_name = (string) self->str_ptr;
self->str_ptr = (char*) copyin(arg4, arg5+1);
self->str_ptr[arg5] = '\0';
self->method_name = (string) self->str_ptr;
self->str_ptr = (char*) copyin(arg6, arg7+1);
self->str_ptr[arg7] = '\0';
self->signature = (string) self->str_ptr;
}
/*
* Method was successfuly compiled
*/
hotspot$target:::method-compile-end
/arg8 && self->ts[self->class_name, self->method_name, self->signature]/
{
/* compiler_name, len, class_name, len, method_name, len,
signature, len, isSuccess */
COMPILED_METHODS_COUNT++;
@compile_time_top[self->class_name, self->method_name, self->signature] =
avg((timestamp -
self->ts[self->class_name, self->method_name, self->signature]) / 1000);
@compile_time_last[self->class_name, self->method_name, self->signature] =
avg((timestamp -
self->ts[self->class_name, self->method_name, self->signature]) / 1000);
self->ts[self->class_name, self->method_name, self->signature] = 0;
}
/*
* Method compilation was failed
*/
hotspot$target:::method-compile-end
/arg8 != 1 && self->ts[self->class_name, self->method_name, self->signature]/
{
/* compiler_name, len, class_name, len, method_name, len,
signature, len, isSuccess */
@fail_compile_count[self->class_name,
self->method_name, self->signature] = count();
}
hotspot$target:::compiled-method-load
{
/* class_name, len, method_name, len, signature, len, code_address, size */
LOADED_METHODS_CNT ++;
}
hotspot$target:::compiled-method-unload
{
/* class_name, len, method_name, len, signature, len, code_address, size */
UNLOADED_METHODS_CNT ++;
}
tick-1sec
/timestamp > SAMPLING_TIME/
{
trunc(@compile_time_top, TOP_RESULTS_COUNT);
trunc(@compile_time_last, -TOP_RESULTS_COUNT);
printf("\n");
printf("%s\n", LINE_SEP);
printf("%Y\n", walltimestamp);
printf("%s\n", LINE_SEP);
printf(
"\nTop %d methods with largest compilation time (in milleseconds):\n",
TOP_RESULTS_COUNT);
printa("%10@d %s::%s%s\n", @compile_time_top);
printf(
"\nTop %d methods with smallest compilation time (in milleseconds):\n",
TOP_RESULTS_COUNT);
printa("%10@d %s::%s%s\n", @compile_time_last);
printf("\n");
printf("Compiled methods: %10d\n", COMPILED_METHODS_COUNT);
printf("Loaded compiled methods: %10d\n", LOADED_METHODS_CNT);
printf("Unoaded compiled methods: %10d\n", UNLOADED_METHODS_CNT);
printf("\nFailed compilation:\n");
printa("%10@d %s::%s%s\n", @fail_compile_count);
SAMPLING_TIME = timestamp + INTERVAL_SECS * 1000000000ull;
}
:::END
{
trunc(@compile_time_top, TOP_RESULTS_COUNT);
trunc(@compile_time_last, -TOP_RESULTS_COUNT);
printf("\n");
printf("%s\n", LINE_SEP);
printf("%Y\n", walltimestamp);
printf("%s\n", LINE_SEP);
printf(
"\nTop %d methods with largest compilation time (in milleseconds):\n",
TOP_RESULTS_COUNT);
printa("%10@d %s::%s%s\n", @compile_time_top);
printf(
"\nTop %d methods with smallest compilation time (in milleseconds):\n",
TOP_RESULTS_COUNT);
printa("%10@d %s::%s%s\n", @compile_time_last);
printf("\n");
printf("Compiled methods: %10d\n", COMPILED_METHODS_COUNT);
printf("Loaded compiled methods: %10d\n", LOADED_METHODS_CNT);
printf("Unoaded compiled methods: %10d\n", UNLOADED_METHODS_CNT);
printf("\nFailed compilations:\n");
printa("%10@d %s::%s%s\n", @fail_compile_count);
printf("\nEND of %s\n", SAMPLE_NAME);
}
syscall::rexit:entry,
syscall::exit:entry
/pid == $target/
{
exit(0);
}