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] 56