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PERF_3.2-DIFF(1) | perf Manual | PERF_3.2-DIFF(1) |
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.OPTIONS¶
-M, --displacementShow 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 file://filename entries.
-C, --comms=
Only consider symbols in these comms. CSV that
understands file://filename entries.
-S, --symbols=
Only consider these symbols. CSV that
understands file://filename entries.
-s, --sort=
Sort by key(s): pid, comm, dso, symbol.
-t, --field-separator=
Use a special separator character and
don’t pad with spaces, replacing all occurrences of this separator in
symbol names (and other output) with a . character, that thus
it’s the only non valid separator.
-v, --verbose
Be verbose, for instance, show the raw counts
in addition to the diff.
-f, --force
Don’t complain, do it.
--symfs=<directory>
Look for files with symbols relative to this
directory.
SEE ALSO¶
perf_3.2-record(1)06/24/2012 | perf |