Run bench at Git ref helper script

This commit is contained in:
2026-03-18 23:14:21 +01:00
parent e530e59473
commit 18e088fdd8

129
scripts/run_bench_at_ref.sh Executable file
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#!/usr/bin/env bash
set -euo pipefail
ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
usage() {
cat <<'EOF'
usage:
./scripts/run_bench_at_ref.sh <git-ref>
Runs benchmarks for a specific git ref (tag, commit, or branch) and appends
the results to bench/history.jsonl.
Uses a temporary worktree to avoid disrupting your current working directory.
Arguments:
git-ref Git reference to benchmark (e.g., v0.4.0, abc1234, HEAD~3)
Environment:
PARRHESIA_BENCH_RUNS Number of runs (default: 3)
PARRHESIA_BENCH_MACHINE_ID Machine identifier (default: hostname -s)
All PARRHESIA_BENCH_* knobs from run_bench_compare.sh are forwarded.
Example:
# Benchmark a specific tag
./scripts/run_bench_at_ref.sh v0.4.0
# Benchmark a commit
./scripts/run_bench_at_ref.sh abc1234
# Quick single-run benchmark
PARRHESIA_BENCH_RUNS=1 ./scripts/run_bench_at_ref.sh v0.3.0
EOF
}
if [[ $# -eq 0 || "${1:-}" == "-h" || "${1:-}" == "--help" ]]; then
usage
exit 0
fi
GIT_REF="$1"
# --- Validate ref exists -----------------------------------------------------
if ! git rev-parse --verify "$GIT_REF" >/dev/null 2>&1; then
echo "Error: git ref '$GIT_REF' not found" >&2
exit 1
fi
RESOLVED_COMMIT="$(git rev-parse "$GIT_REF")"
echo "Benchmarking ref: $GIT_REF ($RESOLVED_COMMIT)"
echo
# --- Setup worktree ----------------------------------------------------------
WORKTREE_DIR="$(mktemp -d)"
trap 'echo "Cleaning up worktree..."; git worktree remove --force "$WORKTREE_DIR" 2>/dev/null || rm -rf "$WORKTREE_DIR"' EXIT
echo "Creating temporary worktree at $WORKTREE_DIR"
git worktree add --detach "$WORKTREE_DIR" "$GIT_REF" >/dev/null 2>&1
# --- Run benchmark in worktree -----------------------------------------------
cd "$WORKTREE_DIR"
# Always copy latest benchmark scripts to ensure consistency
echo "Copying latest benchmark infrastructure from current..."
mkdir -p scripts bench
cp "$ROOT_DIR/scripts/run_bench_update.sh" scripts/
cp "$ROOT_DIR/scripts/run_bench_compare.sh" scripts/
cp "$ROOT_DIR/scripts/run_nostr_bench.sh" scripts/
if [[ -f "$ROOT_DIR/scripts/run_nostr_bench_strfry.sh" ]]; then
cp "$ROOT_DIR/scripts/run_nostr_bench_strfry.sh" scripts/
fi
if [[ -f "$ROOT_DIR/scripts/run_nostr_bench_nostr_rs_relay.sh" ]]; then
cp "$ROOT_DIR/scripts/run_nostr_bench_nostr_rs_relay.sh" scripts/
fi
if [[ -f "$ROOT_DIR/bench/chart.gnuplot" ]]; then
cp "$ROOT_DIR/bench/chart.gnuplot" bench/
fi
echo
echo "Installing dependencies..."
mix deps.get
echo
echo "Running benchmark in worktree..."
echo
RUNS="${PARRHESIA_BENCH_RUNS:-3}"
# Run the benchmark update script which will append to history.jsonl
# Allow it to fail (e.g., README update might fail on old versions) but continue
PARRHESIA_BENCH_RUNS="$RUNS" \
PARRHESIA_BENCH_MACHINE_ID="${PARRHESIA_BENCH_MACHINE_ID:-}" \
./scripts/run_bench_update.sh || echo "Benchmark script exited with error (may be expected for old versions)"
# --- Copy results back -------------------------------------------------------
echo
echo "Copying results back to main repository..."
if [[ -f "$WORKTREE_DIR/bench/history.jsonl" ]]; then
HISTORY_FILE="$ROOT_DIR/bench/history.jsonl"
# Get the last line from worktree history (the one just added)
NEW_ENTRY="$(tail -n 1 "$WORKTREE_DIR/bench/history.jsonl")"
# Check if this exact entry already exists in the main history
if grep -Fxq "$NEW_ENTRY" "$HISTORY_FILE" 2>/dev/null; then
echo "Note: Entry already exists in $HISTORY_FILE, skipping append"
else
echo "Appending result to $HISTORY_FILE"
echo "$NEW_ENTRY" >> "$HISTORY_FILE"
fi
else
echo "Warning: No history.jsonl found in worktree" >&2
exit 1
fi
# --- Done --------------------------------------------------------------------
echo
echo "Benchmark complete for $GIT_REF"
echo
echo "To regenerate the chart with updated history:"
echo " # The chart generation reads from bench/history.jsonl"
echo " # You can manually trigger chart regeneration if needed"