76 lines
2.8 KiB
Bash
Executable file
76 lines
2.8 KiB
Bash
Executable file
#!/usr/bin/env bash
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set -euo pipefail
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shopt -s inherit_errexit
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scriptdir=$(cd "$(dirname -- "$0")" ; pwd -P)
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cd "$scriptdir/.."
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benchSepIx=0
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for arg in "${@}"; do
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if [[ "$arg" == "--" ]]; then break; fi
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benchSepIx=$((benchSepIx+1))
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done
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if [[ $# -lt 2 ]] || [[ $benchSepIx -lt 2 ]]; then
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# FIXME(jade): it is a reasonable use case to want to run a benchmark run
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# on just one build. However, since we are using hyperfine in comparison
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# mode, we would have to combine the JSON ourselves to support that, which
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# would probably be better done by writing a benchmarking script in
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# not-bash.
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echo "Fewer than two result dirs given, nothing to compare!" >&2
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echo "Pass some directories (with names indicating which alternative they are) with bin/nix in them" >&2
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echo "Usage: ./bench/bench.sh result-1 result-2 [result-3...] [--] [bench-1...]" >&2
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exit 1
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fi
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_exit=""
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trap "$_exit" EXIT
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# XXX: yes this is very silly. flakes~!!
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nix build --impure --expr '(builtins.getFlake "git+file:.").inputs.nixpkgs.outPath' -o bench/nixpkgs
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export NIX_REMOTE="$(mktemp -d)"
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_exit='rm -rfv "$NIX_REMOTE"; $_exit'
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export NIX_PATH="nixpkgs=bench/nixpkgs:nixos-config=bench/configuration.nix"
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builds=("${@:1:$benchSepIx}")
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benchsFromArgs=("${@:$((benchSepIx+2))}")
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flake_args="--extra-experimental-features 'nix-command flakes'"
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hyperfineArgs=(
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--parameter-list BUILD "$(IFS=,; echo "${builds[*]}")"
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--warmup 2 --runs 10
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)
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declare -A cases
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cases=(
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[search]="{BUILD}/bin/nix $flake_args search --no-eval-cache github:nixos/nixpkgs/e1fa12d4f6c6fe19ccb59cac54b5b3f25e160870 hello"
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[rebuild]="{BUILD}/bin/nix $flake_args eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'"
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[rebuild-lh]="GC_INITIAL_HEAP_SIZE=10g {BUILD}/bin/nix eval $flake_args --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'"
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[parse]="{BUILD}/bin/nix $flake_args eval -f bench/nixpkgs/pkgs/development/haskell-modules/hackage-packages.nix"
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[substr100k]="{BUILD}/bin/nix eval --no-eval-cache -f bench/substring.nix --apply 'f: f.bench 100000'"
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[substr200k]="{BUILD}/bin/nix eval --no-eval-cache -f bench/substring.nix --apply 'f: f.bench 200000'"
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[substr300k]="{BUILD}/bin/nix eval --no-eval-cache -f bench/substring.nix --apply 'f: f.bench 300000'"
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[substr400k]="{BUILD}/bin/nix eval --no-eval-cache -f bench/substring.nix --apply 'f: f.bench 400000'"
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)
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defaultBenches=(
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rebuild
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rebuild-lh
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search
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parse
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)
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benches=("${benchsFromArgs[@]:-${defaultBenches[@]}}")
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for k in "${benches[@]}"; do
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taskset -c 2,3 \
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chrt -f 50 \
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hyperfine "${hyperfineArgs[@]}" --export-json="bench/bench-${k}.json" --export-markdown="bench/bench-${k}.md" "${cases[$k]}"
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done
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echo "Benchmarks summary (from ./bench/summarize.jq bench/bench-*.json)"
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bench/summarize.jq bench/*.json
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