add CI script for benchmarks

.github/workflows/next_swc_benchmark.yml

@@ -0,0 +1,26 @@
+name: next_swc Benchmark
+on:
+  workflow_dispatch: {}
+jobs:
+  benchmark:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        pages: [0, 1, 12]
+    steps:
+      - uses: actions/checkout
+      - name: Install heaptrack
+        run: apt install heaptrack
+      - name: Build binary
+        run: cargo build --profile release-with-debug --manifest-path $GITHUB_WORKSPACE/packages/next-swc/crates/next-build-test/Cargo.toml
+      - name: Run benchmark
+        run: bash bench.sh 29de71d77fd3db93c33cc3886c64a32ad889278f ${{ matrix.pages }}
+      - name: Print results
+        run: tail -n 7 result.log
+      - name: Upload reports
+        uses: actions/upload-artifact@v4
+        with:
+          name: report
+          path: |
+            result.log
+            heaptrack.*

packages/next-swc/crates/next-build-test/bench.sh

@@ -0,0 +1,32 @@
+#!/bin/bash
+
+# run a benchmark against this binary
+# using heaptrack to extract memory
+# usage numbers at g-max
+
+set -e
+
+COMMIT=${1:-13d9693808badd4b92811abac5e18dc1cddf2384} # the sha of the commit to benchmark
+PAGES=${2:-"/sink,/examples/forms/appearance,/examples/cards,/examples/dashboard,/api/components,/examples/forms/notifications,/sink/new-york,/examples/forms/display,/blocks,/docs/[[...slug]]"} # the list of pages to build
+
+SCRIPTPATH="$( cd -- "$(dirname "$0")" >/dev/null 2>&1 ; pwd -P )"
+
+# build the binary
+cargo build --profile release-with-debug --manifest-path "$SCRIPTPATH/Cargo.toml"
+
+# create a temp dir and clone shadcn-ui into it
+TMPDIR=$(mktemp -d)
+git clone https://github.com/shadcn-ui/ui.git "$TMPDIR"
+cd "$TMPDIR/apps/www"
+git checkout "$COMMIT"
+
+# install the dependencies and change dir
+pnpm install
+
+# heaptrack the binary with the project options in raw mode
+heaptrack --record-only "$SCRIPTPATH/../../../../target/release-with-debug/next-build-test" concurrent 12 "$PAGES"
+"$SCRIPTPATH/../../../../target/release-with-debug/next-build-test" run concurrent 12 999 "$PAGES"
+
+# get most recently created heaptrack profile and run it via heaptrack_print
+PROFILE=$(ls -t "$TMPDIR/heaptrack.*" | head -n1)
+heaptrack_print "$PROFILE" > "$SCRIPTPATH/result.log"