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- perf-diff(1)
- ============
- NAME
- ----
- perf-diff - Read two perf.data files and display the differential profile
- SYNOPSIS
- --------
- [verse]
- '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.
- The differential profile is displayed only for events matching both
- specified perf.data files.
- 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
- --------
- linkperf:perf-record[1]
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