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author | David S. Miller <davem@davemloft.net> | 2010-01-22 22:45:46 -0800 |
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committer | David S. Miller <davem@davemloft.net> | 2010-01-22 22:45:46 -0800 |
commit | 6be325719b3e54624397e413efd4b33a997e55a3 (patch) | |
tree | 57f321a56794cab2222e179b16731e0d76a4a68a /tools/perf/Documentation/perf-diff.txt | |
parent | 26d92f9276a56d55511a427fb70bd70886af647a (diff) | |
parent | 92dcffb916d309aa01778bf8963a6932e4014d07 (diff) |
Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Diffstat (limited to 'tools/perf/Documentation/perf-diff.txt')
-rw-r--r-- | tools/perf/Documentation/perf-diff.txt | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-diff.txt b/tools/perf/Documentation/perf-diff.txt new file mode 100644 index 000000000000..8974e208cba6 --- /dev/null +++ b/tools/perf/Documentation/perf-diff.txt @@ -0,0 +1,55 @@ +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 +------- +-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 occurances 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. + +SEE ALSO +-------- +linkperf:perf-record[1] |