diff options
Diffstat (limited to 'tools/perf-flamegraph-pid')
-rw-r--r-- | tools/perf-flamegraph-pid/default.nix | 24 | ||||
-rwxr-xr-x | tools/perf-flamegraph-pid/perf-flamegraph-pid.sh | 20 |
2 files changed, 44 insertions, 0 deletions
diff --git a/tools/perf-flamegraph-pid/default.nix b/tools/perf-flamegraph-pid/default.nix new file mode 100644 index 0000000..d3b3e1e --- /dev/null +++ b/tools/perf-flamegraph-pid/default.nix @@ -0,0 +1,24 @@ +{ lib, stdenvNoCC, pkgs, config }: + +stdenvNoCC.mkDerivation rec { + pname = "perf-flamegraph-pid"; + src = ./perf-flamegraph-pid.sh; + version = "0.1.0"; + + nativeBuildInputs = with pkgs; [ flamegraph linuxPackages_latest.perf ]; + + dontUnpack = true; + dontBuild = true; + + installPhase = '' + mkdir -p $out/bin + cp $src $out/bin/${pname} + ''; + + meta = with lib; { + description = "Generate a process' flame graph."; + license = with licenses; [ mit ]; + platforms = platforms.unix; + maintainers = with maintainers; [ fcuny ]; + }; +} diff --git a/tools/perf-flamegraph-pid/perf-flamegraph-pid.sh b/tools/perf-flamegraph-pid/perf-flamegraph-pid.sh new file mode 100755 index 0000000..141ceec --- /dev/null +++ b/tools/perf-flamegraph-pid/perf-flamegraph-pid.sh @@ -0,0 +1,20 @@ +#!/usr/bin/env bash + +set -euo pipefail + +OUT_DIR="${HOME}/workspace/debug/flamegraph" +OUT_DATA="${OUT_DIR}/$(date +%y%m%d-%H%M%S).data" +OUT_SVG="${OUT_DIR}/$(date +%y%m%d-%H%M%S).svg" + +mkdir -p "${OUT_DIR}" + +# record the data with perf. We need to run this with sudo to get all +# the privileges we need. +sudo perf record -g --call-graph dwarf --freq max --output "${OUT_DATA}" "$@" + +# give me ownership of the file +sudo chown "${USER}" "${OUT_DATA}" + +perf script --input "${OUT_DATA}" | \ + stackcollapse-perf.pl | \ + flamegraph.pl > "${OUT_SVG}" |