| For a higher level overview, try: perf report --sort comm,dso |
| Sample related events with: perf record -e '{cycles,instructions}:S' |
| Compare performance results with: perf diff [<old file> <new file>] |
| Boolean options have negative forms, e.g.: perf report --no-children |
| Customize output of perf script with: perf script -F event,ip,sym |
| Generate a script for your data: perf script -g <lang> |
| Save output of perf stat using: perf stat record <target workload> |
| Create an archive with symtabs to analyse on other machine: perf archive |
| Search options using a keyword: perf report -h <keyword> |
| Use parent filter to see specific call path: perf report -p <regex> |
| List events using substring match: perf list <keyword> |
| To see list of saved events and attributes: perf evlist -v |
| Use --symfs <dir> if your symbol files are in non-standard locations |
| To see callchains in a more compact form: perf report -g folded |
| Show individual samples with: perf script |
| Limit to show entries above 5% only: perf report --percent-limit 5 |
| Profiling branch (mis)predictions with: perf record -b / perf report |
| Treat branches as callchains: perf report --branch-history |
| To count events in every 1000 msec: perf stat -I 1000 |
| Print event counts in CSV format with: perf stat -x, |
| If you have debuginfo enabled, try: perf report -s sym,srcline |
| For memory address profiling, try: perf mem record / perf mem report |
| For tracepoint events, try: perf report -s trace_fields |
| To record callchains for each sample: perf record -g |
| To record every process run by a user: perf record -u <user> |
| Skip collecting build-id when recording: perf record -B |
| To change sampling frequency to 100 Hz: perf record -F 100 |
| See assembly instructions with percentage: perf annotate <symbol> |
| If you prefer Intel style assembly, try: perf annotate -M intel |
| For hierarchical output, try: perf report --hierarchy |
| Order by the overhead of source file name and line number: perf report -s srcline |
| System-wide collection from all CPUs: perf record -a |
| Show current config key-value pairs: perf config --list |
| Show user configuration overrides: perf config --user --list |