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linux/tools/perf/Documentation
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Jiri Olsa 863e451f69 perf diff: Make diff command work with evsel hists 
Putting 'perf diff' command back on track with the 'latest'
evsel hists changes. Each evsel has its own 'hists' object
gathering stats for the particular event.

While currently counts are accumulated for the whole session
regardless of the events diversification within compared
sessions.

The 'perf diff' command now outputs all matching events within
compared sessions (with event name specified). The per event
diff output stays the same.

  $ ./perf diff
  # Event 'cycles'
  #
  # Baseline  Delta          Shared Object                          Symbol
  # ........ ..........  .................  ..............................
  #
       0.00%    +15.14%  [kernel.kallsyms]  [k] __wake_up
       0.00%    +13.38%  [kernel.kallsyms]  [k] ext4fs_dirhash

... SNIP

       0.00%     +0.42%  [kernel.kallsyms]  [k] local_clock
       0.17%     -0.05%  [kernel.kallsyms]  [k] native_write_msr_safe

  # Event 'faults'
  #
  # Baseline  Delta          Shared Object                          Symbol
  # ........ ..........  .................  ..............................
  #
       0.00%    +79.12%  ld-2.15.so         [.] _dl_relocate_object
       0.00%    +11.62%  ld-2.15.so         [.] openaux

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1346946426-13496-2-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-09-07 21:44:02 -03:00
..
asciidoc.conf perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/ 2009-06-06 20:33:43 +02:00
examples.txt mm-tracepoint: fix documentation and examples 2012-01-10 16:30:41 -08:00
jit-interface.txt perf symbols: Add description of JIT interface 2012-08-13 14:55:02 -03:00
Makefile perf tools: Fix version file for perf documentation with OUTPUT variable set 2012-08-08 12:36:49 -03:00
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 tools: Allow user to indicate path to objdump in command line 2012-09-05 19:41:55 -03:00
perf-archive.txt perf archive: Add documentation 2010-01-20 08:54:58 +01:00
perf-bench.txt perf bench: Fix confused variable namings and descriptions in mem subsystem 2012-07-02 14:35:45 -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 report: Accept fifos as input file 2011-12-23 17:01:03 -02:00
perf-diff.txt perf diff: Make diff command work with evsel hists 2012-09-07 21:44:02 -03:00
perf-evlist.txt perf evlist: Show event attribute details 2012-05-22 14:30:11 -03:00
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 report: Accept fifos as input file 2011-12-23 17:01:03 -02:00
perf-kvm.txt perf kvm: Document missing options 2010-12-01 18:22:46 -02:00
perf-list.txt perf list: Document precise event sampling for AMD IBS 2012-08-08 12:42:21 -03:00
perf-lock.txt perf lock: Document lock info subcommand 2012-01-30 18:30:48 -02:00
perf-probe.txt perf probe: Detect probe target when m/x options are absent 2012-05-11 13:58:53 -03:00
perf-record.txt perf record: Fix documentation for branch stack sampling 2012-05-22 12:47:45 -03:00
perf-report.txt perf tools: Allow user to indicate path to objdump in command line 2012-09-05 19:41:55 -03:00
perf-sched.txt perf report: Accept fifos as input file 2011-12-23 17:01:03 -02:00
perf-script-perl.txt perf script perl/python: Fix libexec scripts path in Documentation 2012-08-20 09:30:36 -03:00
perf-script-python.txt perf script perl/python: Fix libexec scripts path in Documentation 2012-08-20 09:30:36 -03:00
perf-script.txt perf script: Add option resolving vmlinux path 2012-01-30 18:13:07 -02:00
perf-stat.txt perf tools: Allow multiple threads or processes in record, stat, top 2012-02-13 22:54:11 -02:00
perf-test.txt perf test: Allow running just a subset of the available tests 2011-11-29 14:04:35 -02:00
perf-timechart.txt perf report: Accept fifos as input file 2011-12-23 17:01:03 -02:00
perf-top.txt perf tools: Add sort by src line/number 2012-06-19 13:06:18 -03:00
perf.txt perf: Fix few typos + cosmetics 2010-01-13 17:39:44 +01:00
perfconfig.example perf annotate browser: Read perf config file for settings 2012-05-29 22:06:30 -03:00