Update factory processing performance in queueing

.github/workflows/bench.yaml

@@ -0,0 +1,109 @@
+name: Benchmark Comparison
+
+on:
+  pull_request:
+    types: [opened, reopened, synchronize]
+
+concurrency:
+  group: bench-${{ github.head_ref }}
+  cancel-in-progress: true
+
+jobs:
+  bench-base:
+    name: Benchmark main
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          ref: main
+
+      - name: Install stable Rust
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Cache cargo artifacts
+        uses: Swatinem/rust-cache@v2
+
+      - name: Run benchmarks on main
+        run: CI=1 cargo bench -p ractor
+        env:
+          CI: 1
+
+      - name: Install critcmp
+        run: cargo install critcmp --locked
+
+      - name: Export main baseline
+        run: critcmp --export new > main.json
+
+      - name: Upload main baseline
+        uses: actions/upload-artifact@v4
+        with:
+          name: bench-baseline-main
+          path: main.json
+          retention-days: 1
+
+  bench-pr:
+    name: Benchmark PR and compare
+    runs-on: ubuntu-latest
+    needs: bench-base
+    permissions:
+      pull-requests: write
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install stable Rust
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Cache cargo artifacts
+        uses: Swatinem/rust-cache@v2
+
+      - name: Download main baseline
+        uses: actions/download-artifact@v4
+        with:
+          name: bench-baseline-main
+
+      - name: Run benchmarks on PR branch
+        run: CI=1 cargo bench -p ractor
+        env:
+          CI: 1
+
+      - name: Install critcmp
+        run: cargo install critcmp --locked
+
+      - name: Compare benchmarks
+        id: compare
+        run: |
+          RESULT=$(critcmp main.json new)
+          echo "$RESULT"
+          {
+            echo "result<<EOF"
+            echo "$RESULT"
+            echo "EOF"
+          } >> "$GITHUB_OUTPUT"
+
+      - name: Find existing benchmark comment
+        uses: peter-evans/find-comment@v3
+        id: find-comment
+        with:
+          issue-number: ${{ github.event.pull_request.number }}
+          comment-author: github-actions[bot]
+          body-includes: Benchmark Comparison
+
+      - name: Post or update benchmark comment
+        uses: peter-evans/create-or-update-comment@v4
+        with:
+          issue-number: ${{ github.event.pull_request.number }}
+          comment-id: ${{ steps.find-comment.outputs.comment-id }}
+          edit-mode: replace
+          body: |
+            ## Benchmark Comparison (PR vs `main`)
+
+            <details>
+            <summary>Results</summary>
+
+            ```
+            ${{ steps.compare.outputs.result }}
+            ```
+
+            </details>
+
+            _Benchmarks run on shared CI hardware (`ubuntu-latest`). Differences under ~5% may be noise._

ractor/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "ractor"
-version = "0.15.10"
+version = "0.15.11"
 authors = ["Sean Lawlor", "Evan Au", "Dillon George"]
 description = "A actor framework for Rust"
 documentation = "https://docs.rs/ractor"
@@ -111,3 +111,8 @@ required-features = []
 name = "simple_advanced_benchmarks"
 harness = false
 required-features = []
+
+[[bench]]
+name = "factory"
+harness = false
+required-features = []