tools/perf/Documentation/tips.txt

   1 For a higher level overview, try: perf report --sort comm,dso
   2 Sample related events with: perf record -e '{cycles,instructions}:S'
   3 Compare performance results with: perf diff [<old file> <new file>]
   4 Boolean options have negative forms, e.g.: perf report --no-children
   5 Customize output of perf script with: perf script -F event,ip,sym
   6 Generate a script for your data: perf script -g <lang>
   7 Save output of perf stat using: perf stat record <target workload>
   8 Create an archive with symtabs to analyse on other machine: perf archive
   9 Search options using a keyword: perf report -h <keyword>
  10 Use parent filter to see specific call path: perf report -p <regex>
  11 List events using substring match: perf list <keyword>
  12 To see list of saved events and attributes: perf evlist -v
  13 Use --symfs <dir> if your symbol files are in non-standard locations
  14 To see callchains in a more compact form: perf report -g folded
  15 Show individual samples with: perf script
  16 Limit to show entries above 5% only: perf report --percent-limit 5
  17 Profiling branch (mis)predictions with: perf record -b / perf report
  18 Treat branches as callchains: perf report --branch-history
  19 To count events in every 1000 msec: perf stat -I 1000
  20 Print event counts in CSV format with: perf stat -x,
  21 If you have debuginfo enabled, try: perf report -s sym,srcline
  22 For memory address profiling, try: perf mem record / perf mem report
  23 For tracepoint events, try: perf report -s trace_fields
  24 To record callchains for each sample: perf record -g
  25 To record every process run by an user: perf record -u <user>
  26 Skip collecing build-id when recording: perf record -B
  27 To change sampling frequency to 100 Hz: perf record -F 100
  28 See assembly instructions with percentage: perf annotate <symbol>
  29 If you prefer Intel style assembly, try: perf annotate -M intel