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PERF-DIFF(1)			  perf Manual			  PERF-DIFF(1)

NAME
       perf-diff - Read two perf.data files and display the differential
       profile

SYNOPSIS
       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
	   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-record(1)

perf 3.6.11-4.fc16.x8		  01/08/2013			  PERF-DIFF(1)

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