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perf-diff

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

-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 occurances 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.

SEE ALSO

perf-record(1)