WIP

.github/workflows/ci.yml

@@ -38,12 +38,17 @@ jobs:
         run: |
           mvn package -DskipTests=true
           java -Djmh.executor=VIRTUAL -jar bench/target/benchmarks.jar -i 1 -wi 0 -f 1 -to 1100ms -r 1000ms -rf json
-      - name: Store benchmark result
+      - name: Extract branch name
+        shell: bash
+        run: echo "branch=${GITHUB_HEAD_REF:-${GITHUB_REF#refs/heads/}}" >> $GITHUB_OUTPUT
+        id: extract_branch
+      - name: Check & store benchmark result
         uses: benchmark-action/github-action-benchmark@v1
+        # Only store updated benchmark results on main branch
+        if: steps.extract_branch.outputs.branch == 'main'
         with:
           tool: 'jmh'
           output-file-path: jmh-result.json
-          # Use personal access token instead of GITHUB_TOKEN due to https://github.community/t/github-action-not-triggering-gh-pages-upon-push/16096
           github-token: ${{ secrets.GITHUB_TOKEN }}
           auto-push: true
           # Show alert with commit comment on detecting possible performance regression
@@ -53,6 +58,22 @@ jobs:
           fail-on-alert: true
           alert-comment-cc-users: '@adamw'
           # Store benchmark results in the docs folder of the main branch
-          gh-pages-branch: 'main'
+          gh-pages-branch: ${{ steps.extract_branch.outputs.branch }}
+          benchmark-data-dir-path: 'docs/bench'
+          skip-fetch-gh-pages: true
+      - name: Check benchmark result
+        uses: benchmark-action/github-action-benchmark@v1
+        # PRs, other branches
+        if: steps.extract_branch.outputs.branch != 'main'
+        with:
+          tool: 'jmh'
+          output-file-path: jmh-result.json
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          auto-push: false
+          alert-threshold: '120%'
+          comment-on-alert: true
+          fail-on-alert: true
+          alert-comment-cc-users: '@adamw'
+          gh-pages-branch: ${{ steps.extract_branch.outputs.branch }}
           benchmark-data-dir-path: 'docs/bench'
           skip-fetch-gh-pages: true

bench/src/main/java/org/sample/RendezvousBenchmark.java

@@ -83,6 +83,7 @@ public void exchange1() throws InterruptedException {
     @GroupThreads(1)
     public void exchange2() throws InterruptedException {
         exchanger.exchange(64);
+        Thread.sleep(10);
     }
 
     //