diff options
| author | Griffin Smith <grfn@gws.fyi> | 2020-07-15T13·54-0400 |
|---|---|---|
| committer | glittershark <grfn@gws.fyi> | 2020-07-15T20·21+0000 |
| commit | 04ae2933607eaed32c9d99eb3949953a88e63460 (patch) | |
| tree | ce58d6e6feb8dae4f6e0733588f429f298b07de3 /tools | |
| parent | 3fcebfdaa1bedea6d40fe90cdf4885c2b5d36da2 (diff) | |
feat(tools): Add script to flamegraph a command r/1304
Add tools.perf-flamegraph, which collects the base case execution of perf piped through stackcollapse-perf and flamegraph to flamegraph the execution of an external command via perf. Change-Id: I671fe254dc374b6cd7deca2d3bdea266164de025 Reviewed-on: https://cl.tvl.fyi/c/depot/+/1176 Reviewed-by: tazjin <mail@tazj.in> Tested-by: BuildkiteCI
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf-flamegraph.nix | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/tools/perf-flamegraph.nix b/tools/perf-flamegraph.nix new file mode 100644 index 0000000000..fe5c9a1d59 --- /dev/null +++ b/tools/perf-flamegraph.nix @@ -0,0 +1,12 @@ +# Script that collects perf timing for the execution of a command and writes a +# flamegraph to stdout +{ pkgs, ... }: + +pkgs.writeShellScriptBin "perf-flamegraph" '' + set -euo pipefail + + ${pkgs.linuxPackages.perf}/bin/perf record -g -a -F max "$@" + ${pkgs.linuxPackages.perf}/bin/perf script \ + | ${pkgs.flamegraph}/bin/stackcollapse-perf.pl \ + | ${pkgs.flamegraph}/bin/flamegraph.pl +'' |