tjh.dev
1{ nixpkgs, pkgs }:
2
3with pkgs;
4
5runCommand "nixpkgs-metrics"
6 {
7 nativeBuildInputs =
8 with pkgs.lib;
9 map getBin [
10 nix
11 time
12 jq
13 ];
14 # see https://github.com/NixOS/nixpkgs/issues/52436
15 #requiredSystemFeatures = [ "benchmark" ]; # dedicated `t2a` machine, by @vcunat
16 }
17 ''
18 export NIX_STORE_DIR=$TMPDIR/store
19 export NIX_STATE_DIR=$TMPDIR/state
20 export NIX_PAGER=
21 nix-store --init
22
23 mkdir -p $out/nix-support
24 touch $out/nix-support/hydra-build-products
25
26 run() {
27 local name="$1"
28 shift
29
30 echo "running $@"
31
32 case "$name" in
33 # Redirect stdout to /dev/null to avoid hitting "Output Limit
34 # Exceeded" on Hydra.
35 nix-env.qaDrv|nix-env.qaDrvAggressive)
36 NIX_SHOW_STATS=1 NIX_SHOW_STATS_PATH=stats-nix time -o stats-time "$@" >/dev/null ;;
37 *)
38 NIX_SHOW_STATS=1 NIX_SHOW_STATS_PATH=stats-nix time -o stats-time "$@" ;;
39 esac
40
41 cat stats-nix; echo; cat stats-time; echo
42
43 x=$(jq '.cpuTime' < stats-nix)
44 [[ -n $x ]] || exit 1
45 echo "$name.time $x s" >> $out/nix-support/hydra-metrics
46
47 x=$(sed -e 's/.* \([0-9]\+\)maxresident.*/\1/ ; t ; d' < stats-time)
48 [[ -n $x ]] || exit 1
49 echo "$name.maxresident $x KiB" >> $out/nix-support/hydra-metrics
50
51 # nix-2.2 also outputs .symbols.bytes but that wasn't summed originally
52 # https://github.com/NixOS/nix/pull/2392/files#diff-8e6ba8c21672fc1a5f6f606e1e101c74L1762
53 x=$(jq '[.envs,.list,.values,.sets] | map(.bytes) | add' < stats-nix)
54 [[ -n $x ]] || exit 1
55 echo "$name.allocations $x B" >> $out/nix-support/hydra-metrics
56
57 x=$(jq '.values.number' < stats-nix)
58 [[ -n $x ]] || exit 1
59 echo "$name.values $x" >> $out/nix-support/hydra-metrics
60 }
61
62 run nixos.smallContainer nix-instantiate --dry-run ${nixpkgs}/nixos/release.nix \
63 -A closures.smallContainer.x86_64-linux --show-trace
64 run nixos.kde nix-instantiate --dry-run ${nixpkgs}/nixos/release.nix \
65 -A closures.kde.x86_64-linux --show-trace
66 run nixos.lapp nix-instantiate --dry-run ${nixpkgs}/nixos/release.nix \
67 -A closures.lapp.x86_64-linux --show-trace
68 run nix-env.qa nix-env -f ${nixpkgs} -qa
69 run nix-env.qaDrv nix-env -f ${nixpkgs} -qa --drv-path --meta --xml
70
71 # It's slightly unclear which of the set to track: qaCount, qaCountDrv, qaCountBroken.
72 num=$(nix-env -f ${nixpkgs} -qa | wc -l)
73 echo "nix-env.qaCount $num" >> $out/nix-support/hydra-metrics
74 qaCountDrv=$(nix-env -f ${nixpkgs} -qa --drv-path | wc -l)
75 num=$((num - $qaCountDrv))
76 echo "nix-env.qaCountBroken $num" >> $out/nix-support/hydra-metrics
77
78 # TODO: this has been ignored for some time
79 # GC Warning: Bad initial heap size 128k - ignoring it.
80 #export GC_INITIAL_HEAP_SIZE=128k
81 run nix-env.qaAggressive nix-env -f ${nixpkgs} -qa
82 run nix-env.qaDrvAggressive nix-env -f ${nixpkgs} -qa --drv-path --meta --xml
83
84 lines=$(find ${nixpkgs} -name "*.nix" -type f | xargs cat | wc -l)
85 echo "loc $lines" >> $out/nix-support/hydra-metrics
86 ''