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9c90a61c7e
linux/tools/perf/Documentation
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Arnaldo Carvalho de Melo 9c90a61c7e perf tools: Ask for ID PERF_SAMPLE_ info on all PERF_RECORD_ events 
So that we can use -T == --timestamp, asking for PERF_SAMPLE_TIME:

  $ perf record -aT
  $ perf report -D | grep PERF_RECORD_
  <SNIP>
   3   5951915425 0x47530 [0x58]: PERF_RECORD_SAMPLE(IP, 1): 16811/16811: 0xffffffff8138c1a2 period: 215979 cpu:3
   3   5952026879 0x47588 [0x90]: PERF_RECORD_SAMPLE(IP, 1): 16811/16811: 0xffffffff810cb480 period: 215979 cpu:3
   3   5952059959 0x47618 [0x38]: PERF_RECORD_FORK(6853:6853):(16811:16811)
   3   5952138878 0x47650 [0x78]: PERF_RECORD_SAMPLE(IP, 1): 16811/16811: 0xffffffff811bac35 period: 431478 cpu:3
   3   5952375068 0x476c8 [0x30]: PERF_RECORD_COMM: find:6853
   3   5952395923 0x476f8 [0x50]: PERF_RECORD_MMAP 6853/6853: [0x400000(0x25000) @ 0]: /usr/bin/find
   3   5952413756 0x47748 [0xa0]: PERF_RECORD_SAMPLE(IP, 1): 6853/6853: 0xffffffff810d080f period: 859332 cpu:3
   3   5952419837 0x477e8 [0x58]: PERF_RECORD_MMAP 6853/6853: [0x3f44600000(0x21d000) @ 0]: /lib64/ld-2.5.so
   3   5952437929 0x47840 [0x48]: PERF_RECORD_MMAP 6853/6853: [0x7fff7e1c9000(0x1000) @ 0x7fff7e1c9000]: [vdso]
   3   5952570127 0x47888 [0x58]: PERF_RECORD_MMAP 6853/6853: [0x3f46200000(0x218000) @ 0]: /lib64/libselinux.so.1
   3   5952623637 0x478e0 [0x58]: PERF_RECORD_MMAP 6853/6853: [0x3f44a00000(0x356000) @ 0]: /lib64/libc-2.5.so
   3   5952675720 0x47938 [0x58]: PERF_RECORD_MMAP 6853/6853: [0x3f44e00000(0x204000) @ 0]: /lib64/libdl-2.5.so
   3   5952710080 0x47990 [0x58]: PERF_RECORD_MMAP 6853/6853: [0x3f45a00000(0x246000) @ 0]: /lib64/libsepol.so.1
   3   5952847802 0x479e8 [0x58]: PERF_RECORD_SAMPLE(IP, 1): 6853/6853: 0xffffffff813897f0 period: 1142536 cpu:3
  <SNIP>

First column is the cpu and the second the timestamp.

That way we can investigate problems in the event stream.

If the new perf binary is run on an older kernel, it will disable this feature
automatically.

Tested-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Ian Munsie <imunsie@au1.ibm.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Ian Munsie <imunsie@au1.ibm.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Stephane Eranian <eranian@google.com>
LKML-Reference: <1291318772-30880-5-git-send-email-acme@infradead.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2010-12-04 23:08:40 -02:00
..
asciidoc.conf perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/ 2009-06-06 20:33:43 +02:00
examples.txt perf: Rename perf-examples.txt to examples.txt 2009-08-17 10:43:42 +02:00
Makefile perf: Make the install relative to DESTDIR if specified 2010-03-11 14:08:11 +01:00
manpage-1.72.xsl perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/ 2009-06-06 20:33:43 +02:00
manpage-base.xsl perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/ 2009-06-06 20:33:43 +02:00
manpage-bold-literal.xsl perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/ 2009-06-06 20:33:43 +02:00
manpage-normal.xsl perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/ 2009-06-06 20:33:43 +02:00
manpage-suppress-sp.xsl perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/ 2009-06-06 20:33:43 +02:00
perf-annotate.txt perf annotate: Document missing options. 2010-12-01 18:22:45 -02:00
perf-archive.txt perf archive: Add documentation 2010-01-20 08:54:58 +01:00
perf-bench.txt perf tools: Fixup minor doc formatting issues 2010-05-05 11:23:27 -03:00
perf-buildid-cache.txt perf man pages: Fix cut'n'paste error 2010-07-28 11:30:10 -03:00
perf-buildid-list.txt perf buildid-list: Document missing options 2010-12-01 18:22:45 -02:00
perf-diff.txt perf diff: Document missing options 2010-12-01 18:22:46 -02:00
perf-help.txt perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/ 2009-06-06 20:33:43 +02:00
perf-inject.txt perf inject: Add missing bits 2010-05-04 10:48:22 -03:00
perf-kmem.txt perf tools: Fixup minor doc formatting issues 2010-05-05 11:23:27 -03:00
perf-kvm.txt perf kvm: Document missing options 2010-12-01 18:22:46 -02:00
perf-list.txt perf tools: Document event modifiers 2010-10-23 15:31:20 -02:00
perf-lock.txt perf lock: Document missing options 2010-12-01 18:22:46 -02:00
perf-probe.txt perf probe: Fix spelling mistake in documentation 2010-12-01 18:22:46 -02:00
perf-record.txt perf tools: Ask for ID PERF_SAMPLE_ info on all PERF_RECORD_ events 2010-12-04 23:08:40 -02:00
perf-report.txt perf report: Document missing options 2010-12-01 18:22:47 -02:00
perf-sched.txt perf sched: Document missing options 2010-12-01 18:22:48 -02:00
perf-script-perl.txt perf: Rename 'perf trace' to 'perf script' 2010-11-16 19:37:44 +01:00
perf-script-python.txt perf: Rename 'perf trace' to 'perf script' 2010-11-16 19:37:44 +01:00
perf-script.txt Merge branch 'perf/core' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux-2.6 into perf/core 2010-12-02 11:20:11 +01:00
perf-stat.txt perf stat: Add csv-style output 2010-12-01 19:47:41 -02:00
perf-test.txt perf test: Fix spelling mistake in documentation 2010-12-01 18:22:49 -02:00
perf-timechart.txt perf timechart: Add a process filter 2009-10-20 07:55:50 +02:00
perf-top.txt perf top: Document missing options 2010-12-01 18:22:48 -02:00
perf.txt perf: Fix few typos + cosmetics 2010-01-13 17:39:44 +01:00