nixpkgs/pkgs/top-level/metrics.nix
Silvan Mosberger 4f0dadbf38 treewide: format all inactive Nix files
After final improvements to the official formatter implementation,
this commit now performs the first treewide reformat of Nix files using it.
This is part of the implementation of RFC 166.

Only "inactive" files are reformatted, meaning only files that
aren't being touched by any PR with activity in the past 2 months.
This is to avoid conflicts for PRs that might soon be merged.
Later we can do a full treewide reformat to get the rest,
which should not cause as many conflicts.

A CI check has already been running for some time to ensure that new and
already-formatted files are formatted, so the files being reformatted here
should also stay formatted.

This commit was automatically created and can be verified using

    nix-build a08b3a4d19.tar.gz \
      --argstr baseRev b32a094368
    result/bin/apply-formatting $NIXPKGS_PATH
2024-12-10 20:26:33 +01:00

87 lines
3.0 KiB
Nix

{ nixpkgs, pkgs }:
with pkgs;
runCommand "nixpkgs-metrics"
{
nativeBuildInputs =
with pkgs.lib;
map getBin [
nix
time
jq
];
# see https://github.com/NixOS/nixpkgs/issues/52436
#requiredSystemFeatures = [ "benchmark" ]; # dedicated `t2a` machine, by @vcunat
}
''
export NIX_STORE_DIR=$TMPDIR/store
export NIX_STATE_DIR=$TMPDIR/state
export NIX_PAGER=
nix-store --init
mkdir -p $out/nix-support
touch $out/nix-support/hydra-build-products
run() {
local name="$1"
shift
echo "running $@"
case "$name" in
# Redirect stdout to /dev/null to avoid hitting "Output Limit
# Exceeded" on Hydra.
nix-env.qaDrv|nix-env.qaDrvAggressive)
NIX_SHOW_STATS=1 NIX_SHOW_STATS_PATH=stats-nix time -o stats-time "$@" >/dev/null ;;
*)
NIX_SHOW_STATS=1 NIX_SHOW_STATS_PATH=stats-nix time -o stats-time "$@" ;;
esac
cat stats-nix; echo; cat stats-time; echo
x=$(jq '.cpuTime' < stats-nix)
[[ -n $x ]] || exit 1
echo "$name.time $x s" >> $out/nix-support/hydra-metrics
x=$(sed -e 's/.* \([0-9]\+\)maxresident.*/\1/ ; t ; d' < stats-time)
[[ -n $x ]] || exit 1
echo "$name.maxresident $x KiB" >> $out/nix-support/hydra-metrics
# nix-2.2 also outputs .symbols.bytes but that wasn't summed originally
# https://github.com/NixOS/nix/pull/2392/files#diff-8e6ba8c21672fc1a5f6f606e1e101c74L1762
x=$(jq '[.envs,.list,.values,.sets] | map(.bytes) | add' < stats-nix)
[[ -n $x ]] || exit 1
echo "$name.allocations $x B" >> $out/nix-support/hydra-metrics
x=$(jq '.values.number' < stats-nix)
[[ -n $x ]] || exit 1
echo "$name.values $x" >> $out/nix-support/hydra-metrics
}
run nixos.smallContainer nix-instantiate --dry-run ${nixpkgs}/nixos/release.nix \
-A closures.smallContainer.x86_64-linux --show-trace
run nixos.kde nix-instantiate --dry-run ${nixpkgs}/nixos/release.nix \
-A closures.kde.x86_64-linux --show-trace
run nixos.lapp nix-instantiate --dry-run ${nixpkgs}/nixos/release.nix \
-A closures.lapp.x86_64-linux --show-trace
run nix-env.qa nix-env -f ${nixpkgs} -qa
run nix-env.qaDrv nix-env -f ${nixpkgs} -qa --drv-path --meta --xml
# It's slightly unclear which of the set to track: qaCount, qaCountDrv, qaCountBroken.
num=$(nix-env -f ${nixpkgs} -qa | wc -l)
echo "nix-env.qaCount $num" >> $out/nix-support/hydra-metrics
qaCountDrv=$(nix-env -f ${nixpkgs} -qa --drv-path | wc -l)
num=$((num - $qaCountDrv))
echo "nix-env.qaCountBroken $num" >> $out/nix-support/hydra-metrics
# TODO: this has been ignored for some time
# GC Warning: Bad initial heap size 128k - ignoring it.
#export GC_INITIAL_HEAP_SIZE=128k
run nix-env.qaAggressive nix-env -f ${nixpkgs} -qa
run nix-env.qaDrvAggressive nix-env -f ${nixpkgs} -qa --drv-path --meta --xml
lines=$(find ${nixpkgs} -name "*.nix" -type f | xargs cat | wc -l)
echo "loc $lines" >> $out/nix-support/hydra-metrics
''