Linux/Android 性能优化工具 perf

/*****************************************************************************
 *                     Linux/Android 性能优化工具 perf
 * 说明：
 *     之前一直在找Android上的性能优化工具，但是一直不知道应该找哪方面的关键字，
 * 今天在看Android源代码目录的时候看到linux-tools-perf，查了点相关资料，最后
 * 发现这好像就是我一直在找的查看系统性能的工具，目前没有验证任何东西，先记录
 * 下这些东西。
 *
 *                                          2016-06-06 深圳 南山平山村 曾剑锋
 ****************************************************************************/

一、参考文章：
    Linux 性能优化工具 perf top
        http://www.68idc.cn/help/server/linux/20151119591702.html 
    Perf -- Linux下的系统性能调优工具，第 2 部分
        http://www.ibm.com/developerworks/cn/linux/l-cn-perf2/index.html

二、Android perf源码目录情况：
    myzr@myzr:~/myandroid/external$ ls -al linux-tools-perf 
    total 564
    drwxrwxr-x  12 myzr myzr  4096 Jun  6 11:05 .
    drwxrwxr-x 171 myzr myzr  4096 Mar 31 10:32 ..
    -rw-rw-r--   1 myzr myzr  6083 Apr 11  2014 Android.mk
    -rw-rw-r--   1 myzr myzr 42956 Apr 11  2014 android.patch
    drwxrwxr-x   8 myzr myzr  4096 Apr 30  2013 arch
    drwxrwxr-x   2 myzr myzr  4096 Apr 11  2014 bench
    -rw-rw-r--   1 myzr myzr  7607 Apr 11  2014 builtin-annotate.c
    -rw-rw-r--   1 myzr myzr  4952 Apr 11  2014 builtin-bench.c
    -rw-rw-r--   1 myzr myzr  3225 Apr 11  2014 builtin-buildid-cache.c
    -rw-rw-r--   1 myzr myzr  1508 Apr 11  2014 builtin-buildid-list.c
    -rw-rw-r--   1 myzr myzr  6473 Apr 11  2014 builtin-diff.c
    -rw-rw-r--   1 myzr myzr  1249 Apr 11  2014 builtin-evlist.c
    -rw-rw-r--   1 myzr myzr  2045 Apr 11  2014 builtin.h
    -rw-rw-r--   1 myzr myzr 11439 Apr 11  2014 builtin-help.c
    -rw-rw-r--   1 myzr myzr  5702 Apr 11  2014 builtin-inject.c
    -rw-rw-r--   1 myzr myzr 17676 Apr 11  2014 builtin-kmem.c
    -rw-rw-r--   1 myzr myzr  3746 Apr 11  2014 builtin-kvm.c
    -rw-rw-r--   1 myzr myzr  1387 Apr 11  2014 builtin-list.c
    -rw-rw-r--   1 myzr myzr 23756 Apr 11  2014 builtin-lock.c
    -rw-rw-r--   1 myzr myzr 11159 Apr 11  2014 builtin-probe.c
    -rw-rw-r--   1 myzr myzr 23259 Apr 11  2014 builtin-record.c
    -rw-rw-r--   1 myzr myzr 14754 Apr 11  2014 builtin-report.c
    -rw-rw-r--   1 myzr myzr 45433 Apr 11  2014 builtin-sched.c
    -rw-rw-r--   1 myzr myzr 28629 Apr 11  2014 builtin-script.c
    -rw-rw-r--   1 myzr myzr 33129 Apr 11  2014 builtin-stat.c
    -rw-rw-r--   1 myzr myzr 16940 Apr 11  2014 builtin-test.c
    -rw-rw-r--   1 myzr myzr 24003 Apr 11  2014 builtin-timechart.c
    -rw-rw-r--   1 myzr myzr 29062 Apr 11  2014 builtin-top.c
    -rw-rw-r--   1 myzr myzr  2599 Apr 11  2014 CleanSpec.mk
    -rw-rw-r--   1 myzr myzr   814 Apr 11  2014 command-list.txt
    -rw-rw-r--   1 myzr myzr  1536 Apr 11  2014 common-cmds.h
    drwxrwxr-x   2 myzr myzr  4096 Apr 11  2014 config
    -rw-rw-r--   1 myzr myzr   603 Apr 11  2014 CREDITS
    -rw-rw-r--   1 myzr myzr 17723 Apr 11  2014 design.txt
    drwxrwxr-x   2 myzr myzr  4096 Apr 11  2014 Documentation
    drwxrwxr-x   2 myzr myzr  4096 Apr 11  2014 .git
    drwxrwxr-x   2 myzr myzr  4096 Apr 11  2014 host-darwin-fixup
    drwxrwxr-x   2 myzr myzr  4096 Apr 11  2014 host-linux-fixup
    -rw-rw-r--   1 myzr myzr 29895 Apr 11  2014 Makefile
    -rw-rw-r--   1 myzr myzr   288 Apr 11  2014 MANIFEST
    -rw-rw-r--   1 myzr myzr    29 Apr 11  2014 mm.c
    -rw-rw-r--   1 myzr myzr  1229 Apr 11  2014 perf-archive.sh
    -rw-rw-r--   1 myzr myzr 12418 Apr 11  2014 perf.c
    -rw-rw-r--   1 myzr myzr   536 Apr 11  2014 PERF-CFLAGS
    -rw-rw-r--   1 myzr myzr  4880 Apr 11  2014 perf.h
    -rw-rw-r--   1 myzr myzr    21 Apr 11  2014 PERF-VERSION-FILE
    drwxrwxr-x   2 myzr myzr  4096 Apr 11  2014 python
    drwxrwxr-x   4 myzr myzr  4096 Apr 30  2013 scripts
    drwxrwxr-x   6 myzr myzr  4096 Apr 11  2014 util
    myzr@myzr:~/myandroid/external$ 

三、Android perf
    root@android:/ # perf                                                          

     usage: perf [--version] [--help] COMMAND [ARGS]

     The most commonly used perf commands are:
       annotate        Read perf.data (created by perf record) and display annotated code
       archive         Create archive with object files with build-ids found in perf.data file
       bench           General framework for benchmark suites
       buildid-cache   Manage build-id cache.
       buildid-list    List the buildids in a perf.data file
       diff            Read two perf.data files and display the differential profile
       evlist          List the event names in a perf.data file
       inject          Filter to augment the events stream with additional information
       kmem            Tool to trace/measure kernel memory(slab) properties
       kvm             Tool to trace/measure kvm guest os
       list            List all symbolic event types
       lock            Analyze lock events
       probe           Define new dynamic tracepoints
       record          Run a command and record its profile into perf.data
       report          Read perf.data (created by perf record) and display the profile
       sched           Tool to trace/measure scheduler properties (latencies)
       script          Read perf.data (created by perf record) and display trace output
       stat            Run a command and gather performance counter statistics
       test            Runs sanity tests.
       timechart       Tool to visualize total system behavior during a workload
       top             System profiling tool.

     See ‘perf help COMMAND‘ for more information on a specific command.

    root@android:/ # perf --version                                            
    perf version perf.3.0.8_android
    root@android:/ #