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5a6ea81b8f
linux/tools/perf
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Jiri Olsa 5a6ea81b8f perf stat record: Write stat events on record 
Writing stat events on 'perf stat record' at the time we read counter
values from kernel.

Committer note:

After the patch:

  $ perf stat record usleep 1

   Performance counter stats for 'usleep 1':

          0.598006      task-clock (msec)         #    0.484 CPUs utilized
                 1      context-switches          #    0.002 M/sec
                 0      cpu-migrations            #    0.000 K/sec
                52      page-faults               #    0.087 M/sec
           882,744      cycles                    #    1.476 GHz
           581,416      stalled-cycles-frontend   #   65.86% frontend cycles idle
   <not supported>      stalled-cycles-backend
           636,479      instructions              #    0.72  insns per cycle
                                                  #    0.91  stalled cycles per insn
           129,334      branches                  #  216.275 M/sec
             7,512      branch-misses             #    5.81% of all branches

       0.001235157 seconds time elapsed

  $ oldperf evlist
  task-clock
  context-switches
  cpu-migrations
  page-faults
  cycles
  stalled-cycles-frontend
  stalled-cycles-backend
  instructions
  branches
  branch-misses
  $ oldperf report --stdio
  Error:
  The perf.data file has no samples!
  # To display the perf.data header info, please use --header/--header-only options.
  #
  $ perf report -D | grep PERF_RECORD
  0x5b0 [0x28]: PERF_RECORD_THREAD_MAP nr: 1 thread: 5504
  0x5d8 [0x12]: PERF_RECORD_CPU_MAP nr: 1 cpu: 65535
  0x5ea [0x40]: PERF_RECORD_STAT_CONFIG
  0x62a [0x30]: PERF_RECORD_STAT
  0x65a [0x30]: PERF_RECORD_STAT
  0x68a [0x30]: PERF_RECORD_STAT
  0x6ba [0x30]: PERF_RECORD_STAT
  0x6ea [0x30]: PERF_RECORD_STAT
  0x71a [0x30]: PERF_RECORD_STAT
  0x74a [0x30]: PERF_RECORD_STAT
  0x77a [0x30]: PERF_RECORD_STAT
  0x7aa [0x30]: PERF_RECORD_STAT
  -1 -1 0x7da [0x40]: PERF_RECORD_MMAP -1/0: [0xffffffff81000000(0x1f000000) @ 0xffffffff81000000]: x [kernel.kallsyms]_text
  $

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1446734469-11352-8-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-12-17 16:00:22 -03:00
..
arch perf subcmd: Create subcmd library 2015-12-17 14:27:14 -03:00
bench perf subcmd: Create subcmd library 2015-12-17 14:27:14 -03:00
config Revert "perf tools: Improve setting of gcc debug option" 2015-12-10 16:09:40 -03:00
Documentation perf stat record: Add record command 2015-12-17 15:15:15 -03:00
python perf python: Support the PERF_RECORD_SWITCH event 2015-10-07 19:41:50 -03:00
scripts perf tools: Add more documentation to export-to-postgresql.py script 2015-09-28 16:53:07 -03:00
tests perf tools: Add event_update event cpus type 2015-12-17 15:13:38 -03:00
trace/strace/groups perf trace: Add read/write to the file group 2015-09-04 13:22:06 -03:00
ui perf tui: Change default selection background color to yellow 2015-12-09 13:41:55 -03:00
util perf evlist: Export id_add_fd() 2015-12-17 15:15:19 -03:00
.gitignore perf tools: Add Intel PT instruction decoder 2015-08-17 11:11:36 -03:00
Build perf tools: Provide subcmd configuration at runtime 2015-12-16 16:18:16 -03:00
builtin-annotate.c perf subcmd: Create subcmd library 2015-12-17 14:27:14 -03:00
builtin-bench.c perf subcmd: Create subcmd library 2015-12-17 14:27:14 -03:00
builtin-buildid-cache.c perf subcmd: Create subcmd library 2015-12-17 14:27:14 -03:00
builtin-buildid-list.c perf subcmd: Create subcmd library 2015-12-17 14:27:14 -03:00
builtin-config.c perf subcmd: Create subcmd library 2015-12-17 14:27:14 -03:00
builtin-data.c perf subcmd: Create subcmd library 2015-12-17 14:27:14 -03:00
builtin-diff.c perf callchain: Allow disabling call graphs per event 2015-08-12 13:20:28 -03:00
builtin-evlist.c perf subcmd: Create subcmd library 2015-12-17 14:27:14 -03:00
builtin-help.c perf subcmd: Create subcmd library 2015-12-17 14:27:14 -03:00
builtin-inject.c perf subcmd: Create subcmd library 2015-12-17 14:27:14 -03:00
builtin-kmem.c perf subcmd: Create subcmd library 2015-12-17 14:27:14 -03:00
builtin-kvm.c perf subcmd: Create subcmd library 2015-12-17 14:27:14 -03:00
builtin-list.c perf subcmd: Create subcmd library 2015-12-17 14:27:14 -03:00
builtin-lock.c perf subcmd: Create subcmd library 2015-12-17 14:27:14 -03:00
builtin-mem.c perf subcmd: Create subcmd library 2015-12-17 14:27:14 -03:00
builtin-probe.c perf subcmd: Create subcmd library 2015-12-17 14:27:14 -03:00
builtin-record.c perf tools: Introduce stat perf.data header feature 2015-12-17 15:15:14 -03:00
builtin-report.c perf subcmd: Create subcmd library 2015-12-17 14:27:14 -03:00
builtin-sched.c perf subcmd: Create subcmd library 2015-12-17 14:27:14 -03:00
builtin-script.c perf subcmd: Create subcmd library 2015-12-17 14:27:14 -03:00
builtin-stat.c perf stat record: Write stat events on record 2015-12-17 16:00:22 -03:00
builtin-timechart.c perf subcmd: Create subcmd library 2015-12-17 14:27:14 -03:00
builtin-top.c perf subcmd: Create subcmd library 2015-12-17 14:27:14 -03:00
builtin-trace.c perf subcmd: Create subcmd library 2015-12-17 14:27:14 -03:00
builtin-version.c perf tools: Move cmd_version() to builtin-version.c 2015-12-09 13:42:03 -03:00
builtin.h perf tools: Add 'perf config' command 2015-11-23 18:31:24 -03:00
command-list.txt perf tools: Add 'perf config' command 2015-11-23 18:31:24 -03:00
CREDITS
design.txt
Makefile perf tools: Allow shuffling the build tests 2015-11-05 11:39:54 -03:00
Makefile.perf perf subcmd: Create subcmd library 2015-12-17 14:27:14 -03:00
MANIFEST perf subcmd: Create subcmd library 2015-12-17 14:27:14 -03:00
perf-archive.sh
perf-completion.sh perf tools: Avoid confusion with preloaded bash function for perf bash completion 2015-03-19 13:53:27 -03:00
perf-read-vdso.c perf tools: Build programs to copy 32-bit compatibility 2014-10-29 10:32:48 -02:00
perf-sys.h perf tools: Move generic barriers out of perf-sys.h 2015-05-08 16:05:08 -03:00
perf-with-kcore.sh perf tools: Fix perf-with-kcore handling of arguments containing spaces 2015-08-06 16:48:27 -03:00
perf.c perf subcmd: Create subcmd library 2015-12-17 14:27:14 -03:00
perf.h perf record: Add ability to name registers to record 2015-08-31 18:01:33 -03:00