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| author |   Andi Kleen <ak@linux.intel.com> | 2015-08-07 15:54:24 -0700 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-08-10 17:20:25 -0300 |
| commit | 31191a85fb875cf123cea56bbfd34f4b941f3c79 (patch) | |
| tree | cd2cce745f743947fbad074781a4e3ae311d03a1 /tools/perf/util/hist.h | |
| parent | perf hists: Update the column width for the "srcline" sort key (diff) | |
| download | wireguard-linux-31191a85fb875cf123cea56bbfd34f4b941f3c79.tar.xz wireguard-linux-31191a85fb875cf123cea56bbfd34f4b941f3c79.zip | |
perf report: Add support for srcfile sort key
In some cases it's useful to characterize samples by file. This is
useful to get a higher level categorization, for example to map cost to
subsystems.
Add a srcfile sort key to perf report. It builds on top of the existing
srcline support.
Commiter notes:
E.g.:
# perf record -F 10000 usleep 1
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.016 MB perf.data (13 samples) ]
[root@zoo ~]# perf report -s srcfile --stdio
# Total Lost Samples: 0
#
# Samples: 13 of event 'cycles'
# Event count (approx.): 869878
#
# Overhead Source File
# ........ ...........
60.99% .
20.62% paravirt.h
14.23% rmap.c
4.04% signal.c
0.11% msr.h
#
The first line is collecting all the files for which srcfiles couldn't somehow
get resolved to:
# perf report -s srcfile,dso --stdio
# Total Lost Samples: 0
#
# Samples: 13 of event 'cycles'
# Event count (approx.): 869878
#
# Overhead Source File Shared Object
# ........ ........... ................
40.97% . ld-2.20.so
20.62% paravirt.h [kernel.vmlinux]
20.02% . libc-2.20.so
14.23% rmap.c [kernel.vmlinux]
4.04% signal.c [kernel.vmlinux]
0.11% msr.h [kernel.vmlinux]
#
XXX: Investigate why that is not resolving on Fedora 21, Andi says he hasn't
seen this on Fedora 22.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/1438988064-21834-1-git-send-email-andi@firstfloor.org
[ Added column length update, from 0e65bdb3f90f ('perf hists: Update the column width for the "srcline" sort key') ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/hist.h')
| -rw-r--r-- | tools/perf/util/hist.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h index e2f712f85d2e..bc528d54e457 100644 --- a/tools/perf/util/hist.h +++ b/tools/perf/util/hist.h @@ -30,6 +30,7 @@ enum hist_column { HISTC_PARENT, HISTC_CPU, HISTC_SRCLINE, + HISTC_SRCFILE, HISTC_MISPREDICT, HISTC_IN_TX, HISTC_ABORT, |