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=:: Look for files with symbols relative to this directory. -b:: --baseline-only:: Show only items with match in baseline. SEE ALSO -------- linkperf:perf-record[1]