projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 86a9eee0 | 1 | perf-diff(1) |
| 4778e0e8 | 2 | ============ |
| 86a9eee0 ACM |
3 | |
| 4 | NAME | |
| 5 | ---- | |
| d30531c6 | 6 | perf-diff - Read two perf.data files and display the differential profile |
| 86a9eee0 ACM |
7 | |
| 8 | SYNOPSIS | |
| 9 | -------- | |
| 10 | [verse] | |
| 11 | 'perf diff' [oldfile] [newfile] | |
| 12 | ||
| 13 | DESCRIPTION | |
| 14 | ----------- | |
| d30531c6 | 15 | This command displays the performance difference amongst two perf.data files |
| 86a9eee0 ACM |
16 | captured via perf record. |
| 17 | ||
| 18 | If no parameters are passed it will assume perf.data.old and perf.data. | |
| 19 | ||
| 20 | OPTIONS | |
| 21 | ------- | |
| c351c281 ACM |
22 | -d:: |
| 23 | --dsos=:: | |
| 24 | Only consider symbols in these dsos. CSV that understands | |
| 25 | file://filename entries. | |
| 26 | ||
| 27 | -C:: | |
| 28 | --comms=:: | |
| 29 | Only consider symbols in these comms. CSV that understands | |
| 30 | file://filename entries. | |
| 31 | ||
| 32 | -S:: | |
| 33 | --symbols=:: | |
| 34 | Only consider these symbols. CSV that understands | |
| 35 | file://filename entries. | |
| 36 | ||
| 37 | -s:: | |
| 38 | --sort=:: | |
| 39 | Sort by key(s): pid, comm, dso, symbol. | |
| 40 | ||
| 41 | -t:: | |
| 42 | --field-separator=:: | |
| 43 | ||
| 44 | Use a special separator character and don't pad with spaces, replacing | |
| 45 | all occurances of this separator in symbol names (and other output) | |
| 46 | with a '.' character, that thus it's the only non valid separator. | |
| 47 | ||
| 86a9eee0 ACM |
48 | -v:: |
| 49 | --verbose:: | |
| d30531c6 | 50 | Be verbose, for instance, show the raw counts in addition to the |
| 86a9eee0 | 51 | diff. |
| cdccc690 | 52 | |
| 86a9eee0 ACM |
53 | SEE ALSO |
| 54 | -------- | |
| 55 | linkperf:perf-record[1] |