PERF\-DIFF
Section: Misc. Reference Manual Pages (1)Updated: 10/16/2012
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NAME
perf-diff - Read two perf.data files and display the differential profileSYNOPSIS
perf diff [oldfile] [newfile]
DESCRIPTION
This command displays the performance difference amongst two perf.data files captured via perf record.
If no parameters are passed it will assume perf.data.old and perf.data.
OPTIONS
-M, --displacement
- Show position displacement relative to baseline.
-D, --dump-raw-trace
- Dump raw trace in ASCII.
-m, --modules
- Load module symbols. WARNING: use only with -k and LIVE kernel
-d, --dsos=
- Only consider symbols in these dsos. CSV that understands m[blue]file://filenamem[] entries.
-C, --comms=
- Only consider symbols in these comms. CSV that understands m[blue]file://filenamem[] entries.
-S, --symbols=
- Only consider these symbols. CSV that understands m[blue]file://filenamem[] entries.
-s, --sort=
- Sort by key(s): pid, comm, dso, symbol.
-t, --field-separator=
- Use a special separator character and doncqt pad with spaces, replacing all occurrences of this separator in symbol names (and other output) with a . character, that thus itcqs the only non valid separator.
-v, --verbose
- Be verbose, for instance, show the raw counts in addition to the diff.
-f, --force
- Doncqt complain, do it.
--symfs=<directory>
- Look for files with symbols relative to this directory.
SEE ALSO
perf-record(1)
Index
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Time: 05:29:07 GMT, December 24, 2015