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linux
1perf-diff(1)
2============
3
4NAME
5----
6perf-diff - Read two perf.data files and display the differential profile
7
8SYNOPSIS
9--------
10[verse]
11'perf diff' [oldfile] [newfile]
12
13DESCRIPTION
14-----------
15This command displays the performance difference amongst two perf.data files
16captured via perf record.
17
18If no parameters are passed it will assume perf.data.old and perf.data.
19
20OPTIONS
21-------
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
48-v::
49--verbose::
50 Be verbose, for instance, show the raw counts in addition to the
51 diff.
52
53SEE ALSO
54--------
55linkperf:perf-record[1]