1PERF-DIFF(1)                      perf Manual                     PERF-DIFF(1)
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NAME

6       perf-diff - Read two perf.data files and display the differential
7       profile
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SYNOPSIS

10       perf diff [oldfile] [newfile]
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DESCRIPTION

13       This command displays the performance difference amongst two perf.data
14       files captured via perf record.
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16       If no parameters are passed it will assume perf.data.old and perf.data.
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OPTIONS

19       -d, --dsos=
20           Only consider symbols in these dsos. CSV that understands
21           file://filename entries.
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23       -C, --comms=
24           Only consider symbols in these comms. CSV that understands
25           file://filename entries.
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27       -S, --symbols=
28           Only consider these symbols. CSV that understands file://filename
29           entries.
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31       -s, --sort=
32           Sort by key(s): pid, comm, dso, symbol.
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34       -t, --field-separator=
35           Use a special separator character and don’t pad with spaces,
36           replacing all occurances of this separator in symbol names (and
37           other output) with a .  character, that thus it’s the only non
38           valid separator.
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40       -v, --verbose
41           Be verbose, for instance, show the raw counts in addition to the
42           diff.
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SEE ALSO

45       perf-record(1)
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49perf 2.6.35.14-106.fc             11/23/2011                      PERF-DIFF(1)