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. 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. SEE ALSO -------- linkperf:perf-record[1]