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lib.fileset: More reusable benchmark code

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This commit is contained in:
Silvan Mosberger 2023-09-14 22:14:06 +02:00
parent 7ab764e575
commit 631ad21692
1 changed files with 55 additions and 46 deletions
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101
lib/fileset/benchmark.sh
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@ -28,38 +28,6 @@ work="$tmp/work"
mkdir "$work"
cd "$work"
# Create a fairly populated tree
touch f{0..5}
mkdir d{0..5}
mkdir e{0..5}
touch d{0..5}/f{0..5}
mkdir -p d{0..5}/d{0..5}
mkdir -p e{0..5}/e{0..5}
touch d{0..5}/d{0..5}/f{0..5}
mkdir -p d{0..5}/d{0..5}/d{0..5}
mkdir -p e{0..5}/e{0..5}/e{0..5}
touch d{0..5}/d{0..5}/d{0..5}/f{0..5}
mkdir -p d{0..5}/d{0..5}/d{0..5}/d{0..5}
mkdir -p e{0..5}/e{0..5}/e{0..5}/e{0..5}
touch d{0..5}/d{0..5}/d{0..5}/d{0..5}/f{0..5}
bench() {
NIX_PATH=nixpkgs=$1 NIX_SHOW_STATS=1 NIX_SHOW_STATS_PATH=$tmp/stats.json \
nix-instantiate --eval --strict --show-trace >/dev/null \
--expr '(import <nixpkgs/lib>).fileset.toSource { root = ./.; fileset = ./.; }'
cat "$tmp/stats.json"
}
echo "Running benchmark on index" >&2
bench "$nixpkgs" > "$tmp/new.json"
(
echo "Checking out $compareTo" >&2
git -C "$nixpkgs" worktree add --quiet "$tmp/worktree" "$compareTo"
trap 'git -C "$nixpkgs" worktree remove "$tmp/worktree"' EXIT
echo "Running benchmark on $compareTo" >&2
bench "$tmp/worktree" > "$tmp/old.json"
)
declare -a stats=(
".envs.elements"
".envs.number"
@ -77,18 +45,59 @@ declare -a stats=(
".values.number"
)
different=0
for stat in "${stats[@]}"; do
oldValue=$(jq "$stat" "$tmp/old.json")
newValue=$(jq "$stat" "$tmp/new.json")
if (( oldValue != newValue )); then
percent=$(bc <<< "scale=100; result = 100/$oldValue*$newValue; scale=4; result / 1")
if (( oldValue < newValue )); then
echo -e "Statistic $stat ($newValue) is \e[0;31m$percent% (+$(( newValue - oldValue )))\e[0m of the old value $oldValue" >&2
else
echo -e "Statistic $stat ($newValue) is \e[0;32m$percent% (-$(( oldValue - newValue )))\e[0m of the old value $oldValue" >&2
# TODO: Measure time
run() {
NIX_PATH=nixpkgs=$1 NIX_SHOW_STATS=1 NIX_SHOW_STATS_PATH=$tmp/stats.json \
nix-instantiate --eval --strict --show-trace >/dev/null \
--expr 'with import <nixpkgs/lib>; with fileset; '"$2"
cat "$tmp/stats.json"
}
bench() {
echo "Benchmarking expression $1" >&2
#echo "Running benchmark on index" >&2
run "$nixpkgs" "$1" > "$tmp/new.json"
(
#echo "Checking out $compareTo" >&2
git -C "$nixpkgs" worktree add --quiet "$tmp/worktree" "$compareTo"
trap 'git -C "$nixpkgs" worktree remove "$tmp/worktree"' EXIT
#echo "Running benchmark on $compareTo" >&2
run "$tmp/worktree" "$1" > "$tmp/old.json"
)
different=0
for stat in "${stats[@]}"; do
oldValue=$(jq "$stat" "$tmp/old.json")
newValue=$(jq "$stat" "$tmp/new.json")
if (( oldValue != newValue )); then
percent=$(bc <<< "scale=100; result = 100/$oldValue*$newValue; scale=4; result / 1")
if (( oldValue < newValue )); then
echo -e "Statistic $stat ($newValue) is \e[0;31m$percent% (+$(( newValue - oldValue )))\e[0m of the old value $oldValue" >&2
else
echo -e "Statistic $stat ($newValue) is \e[0;32m$percent% (-$(( oldValue - newValue )))\e[0m of the old value $oldValue" >&2
fi
(( different++ )) || true
fi
(( different++ )) || true
fi
done
echo "$different stats differ between the current tree and $compareTo"
done
echo "$different stats differ between the current tree and $compareTo"
echo ""
}
# Create a fairly populated tree
touch f{0..5}
mkdir d{0..5}
mkdir e{0..5}
touch d{0..5}/f{0..5}
mkdir -p d{0..5}/d{0..5}
mkdir -p e{0..5}/e{0..5}
touch d{0..5}/d{0..5}/f{0..5}
mkdir -p d{0..5}/d{0..5}/d{0..5}
mkdir -p e{0..5}/e{0..5}/e{0..5}
touch d{0..5}/d{0..5}/d{0..5}/f{0..5}
mkdir -p d{0..5}/d{0..5}/d{0..5}/d{0..5}
mkdir -p e{0..5}/e{0..5}/e{0..5}/e{0..5}
touch d{0..5}/d{0..5}/d{0..5}/d{0..5}/f{0..5}
bench 'toSource { root = ./.; fileset = ./.; }'
rm -rf -- *