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# 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
${pkgs.linuxPackages.perf}/bin/perf record -g --call-graph dwarf -F max "$@"
${pkgs.linuxPackages.perf}/bin/perf script \
| ${pkgs.flamegraph}/bin/stackcollapse-perf.pl \
| ${pkgs.flamegraph}/bin/flamegraph.pl
''
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