fix 2 bechmark ci parllel matrix workflows

Author: namanONcode

.github/workflows/benchmark.yml

@@ -8,8 +8,21 @@ permissions:
 
 jobs:
   benchmark:
-    name: Run Enterprise Benchmarks
+    name: Bench · ${{ matrix.name }}
     runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - name: spsc-queue
+            filter: "SpscEventBenchmark"
+            extra_params: ""
+          - name: scaling-low
+            filter: "S1_S5_ThroughputLatencyBenchmark"
+            extra_params: "-p payloadSize=64 -p concurrency=1:1,4:1"
+          - name: scaling-high
+            filter: "S1_S5_ThroughputLatencyBenchmark"
+            extra_params: "-p payloadSize=64 -p concurrency=8:1,16:4,32:8"
 
     steps:
       - name: Checkout
@@ -22,47 +35,74 @@ jobs:
           distribution: 'temurin'
           cache: maven
 
-      - name: Enable perf_events for async-profiler
+      - name: Build zThread
+        run: ./mvnw clean install -DskipTests --batch-mode --no-transfer-progress
+
+      - name: Run Benchmarks
+        timeout-minutes: 10
         run: |
-          sudo sysctl -w kernel.perf_event_paranoid=1
-          sudo sysctl -w kernel.kptr_restrict=0
+          timeout 300 ./mvnw exec:exec -pl zthread-benchmark -Dexec.executable="java" \
+            -Dexec.args="-classpath %classpath \
+            --enable-native-access=ALL-UNNAMED -XX:+UseZGC \
+            org.openjdk.jmh.Main ${{ matrix.filter }} ${{ matrix.extra_params }} \
+            -rf json -rff target/benchmark-${{ matrix.name }}.json -prof gc \
+            -f 0 -wi 1 -i 2 -r 1s" --batch-mode || true
+          if [ ! -s zthread-benchmark/target/benchmark-${{ matrix.name }}.json ]; then
+            echo "ERROR: benchmark-${{ matrix.name }}.json was not generated"
+            exit 1
+          fi
+
+      - name: Upload Results
+        uses: actions/upload-artifact@v4
+        with:
+          name: benchmark-${{ matrix.name }}
+          path: zthread-benchmark/target/benchmark-${{ matrix.name }}.json
+
+  report:
+    name: Generate Reports
+    runs-on: ubuntu-latest
+    needs: benchmark
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
 
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
           python-version: '3.12'
 
       - name: Install Charting Dependencies
-        run: |
-          python -m pip install --upgrade pip
-          pip install matplotlib pandas seaborn
+        run: pip install matplotlib pandas seaborn
 
-      - name: Build zThread
-        run: ./mvnw clean install -DskipTests --batch-mode --no-transfer-progress
-
-      - name: Run JMH Benchmarks
-        run: ./mvnw exec:exec -pl zthread-benchmark -Dexec.executable="java" -Dexec.args="-classpath %classpath org.openjdk.jmh.Main (SpscEventBenchmark|S1_S5_ThroughputLatencyBenchmark) -p payloadSize=64 -rf json -rff target/benchmark.json -prof gc -f 0 -wi 1 -i 2 -r 1s" --batch-mode
+      - name: Download All Results
+        uses: actions/download-artifact@v4
+        with:
+          path: benchmark-results
+          pattern: benchmark-*
+          merge-multiple: true
 
-      - name: Generate Charts and Report
+      - name: Merge & Generate Charts
         run: |
-          # Generate benchmark report inside zthread-benchmark
+          mkdir -p zthread-benchmark/target
+          jq -s 'add' benchmark-results/*.json > zthread-benchmark/target/benchmark.json
+          echo "Merged $(jq length zthread-benchmark/target/benchmark.json) benchmark entries"
+
           cd zthread-benchmark
           python scripts/generate_charts.py target/benchmark.json
-          
-          # Generate main README.md graph and update table
           cd ..
           python scripts/generate-graph.py zthread-benchmark/target/benchmark.json
 
-      - name: Commit Updated Benchmark Data
+      - name: Commit Updated Data
         uses: stefanzweifel/git-auto-commit-action@v5
         with:
           commit_message: "docs(benchmark): auto-update performance charts and README"
           file_pattern: "README.md assets/benchmark_graph.svg zthread-benchmark/charts/* zthread-benchmark/benchmark.md"
 
-      - name: Upload Benchmark Results
+      - name: Upload Final Report
         uses: actions/upload-artifact@v4
         with:
-          name: benchmark-results
+          name: benchmark-report
           path: |
             zthread-benchmark/target/benchmark.json
             zthread-benchmark/charts/