Add /benchmark github command to comparison benchmark between base and pr commit

.github/workflows/pr_benchmarks.yml

@@ -0,0 +1,87 @@
+# Runs the benchmark command on the PR and
+# on the branch, posting the results as a comment back the PR
+name: Benchmarks
+
+on:
+  issue_comment:
+
+jobs:
+  benchmark:
+    name: Run Benchmarks
+    runs-on: ubuntu-latest
+    if: github.event.issue.pull_request && contains(github.event.comment.body, '/benchmark')
+    steps:
+      - name: Dump GitHub context
+        env:
+          GITHUB_CONTEXT: ${{ toJSON(github) }}
+        run: echo "$GITHUB_CONTEXT"
+
+      - name: Checkout PR changes
+        uses: actions/checkout@v4
+        with:
+          ref: refs/pull/${{ github.event.issue.number }}/head
+
+      - name: Setup data and generate unique result names
+        run: |
+          cd benchmarks
+          mkdir data
+
+          # Setup the TPC-H data set with a scale factor of 10
+          ./bench.sh data tpch
+
+          # Generate a unique-ish identifiers for the results
+          echo "HEAD_LONG_SHA=$(git log -1 --format='%H')" >> "$GITHUB_ENV" 
+          echo "HEAD_SHORT_SHA=$(git log -1 --format='%h' --abbrev=7)" >> "$GITHUB_ENV" 
+          echo "BASE_SHORT_SHA=$(echo "${{ github.sha }}" | cut -c1-7)" >> "$GITHUB_ENV"
+
+      - name: Benchmark PR changes
+        env:
+          RESULTS_NAME: ${{ env.HEAD_SHORT_SHA }}
+        run: |
+          cd benchmarks
+
+          ./bench.sh run tpch
+
+      - name: Checkout base commit
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ github.sha }}
+          clean: false
+
+      - name: Benchmark baseline and generate comparison message
+        env:
+          RESULTS_NAME: ${{ env.BASE_SHORT_SHA }}
+        run: |
+          cd benchmarks
+
+          ./bench.sh run tpch
+
+          echo ${{ github.event.issue.number }} > pr
+
+          pip3 install rich
+          cat > message.md <<EOF
+          # Benchmark results
+
+          <details>
+          <summary>Benchmarks comparing ${{ github.sha }} (main) and ${{ env.HEAD_LONG_SHA }} (PR)</summary>
+
+          \`\`\`
+          $(./bench.sh compare ${{ env.BASE_SHORT_SHA }} ${{ env.HEAD_SHORT_SHA }})
+          \`\`\`
+
+          </details>
+          EOF
+
+          cat message.md
+
+      - name: Upload benchmark comparison message
+        uses: actions/upload-artifact@v4
+        with:
+          name: message
+          path: benchmarks/message.md
+
+      - name: Upload PR number
+        uses: actions/upload-artifact@v4
+        with:
+          name: pr
+          path: benchmarks/pr

.github/workflows/pr_comment.yml

@@ -0,0 +1,53 @@
+# Downloads any `message` artifacts created by other jobs
+# and posts them as comments to the PR
+name: PR Comment
+
+on:
+  workflow_run:
+    workflows: ["Benchmarks"]
+    types:
+      - completed
+
+jobs:
+  comment:
+    name: PR Comment
+    runs-on: ubuntu-latest
+    if: github.event.workflow_run.conclusion == 'success'
+    steps:
+      - name: Dump GitHub context
+        env:
+          GITHUB_CONTEXT: ${{ toJSON(github) }}
+        run: echo "$GITHUB_CONTEXT"
+
+      - name: Download comment message
+        uses: actions/download-artifact@v4
+        with:
+          name: message
+          run-id: ${{ github.event.workflow_run.id }}
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Download pr number
+        uses: actions/download-artifact@v4
+        with:
+          name: pr
+          run-id: ${{ github.event.workflow_run.id }}
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Print message and pr number
+        run: |
+          cat pr
+          echo "PR_NUMBER=$(cat pr)" >> "$GITHUB_ENV"
+          cat message.md
+
+      - name: Post the comment
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const fs = require('fs');
+            const content = fs.readFileSync('message.md', 'utf8');
+            github.rest.issues.createComment({
+              issue_number: process.env.PR_NUMBER,
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              body: content,
+            })

benchmarks/bench.sh

@@ -82,6 +82,7 @@ clickbench_extended:    ClickBench "inspired" queries against a single parquet (
 DATA_DIR        directory to store datasets
 CARGO_COMMAND   command that runs the benchmark binary
 DATAFUSION_DIR  directory to use (default $DATAFUSION_DIR)
+RESULTS_NAME    folder where the benchmark files are stored
 "
     exit 1
 }
@@ -166,18 +167,19 @@ main() {
             esac
             ;;
         run)
-            # Parse positional paraleters
+            # Parse positional parameters
             BENCHMARK=${ARG2:-"${BENCHMARK}"}
             BRANCH_NAME=$(cd ${DATAFUSION_DIR} && git rev-parse --abbrev-ref HEAD)
             BRANCH_NAME=${BRANCH_NAME//\//_} # mind blowing syntax to replace / with _
-            RESULTS_DIR=${RESULTS_DIR:-"$SCRIPT_DIR/results/$BRANCH_NAME"}
+            RESULTS_NAME=${RESULTS_NAME:-"${BRANCH_NAME}"}
+            RESULTS_DIR=${RESULTS_DIR:-"$SCRIPT_DIR/results/$RESULTS_NAME"}
 
             echo "***************************"
             echo "DataFusion Benchmark Script"
             echo "COMMAND: ${COMMAND}"
             echo "BENCHMARK: ${BENCHMARK}"
             echo "DATAFUSION_DIR: ${DATAFUSION_DIR}"
-            echo "BRACH_NAME: ${BRANCH_NAME}"
+            echo "BRANCH_NAME: ${BRANCH_NAME}"
             echo "DATA_DIR: ${DATA_DIR}"
             echo "RESULTS_DIR: ${RESULTS_DIR}"
             echo "CARGO_COMMAND: ${CARGO_COMMAND}"
@@ -278,7 +280,7 @@ data_tpch() {
         echo " tbl files exist ($FILE exists)."
     else
         echo " creating tbl files with tpch_dbgen..."
-        docker run -v "${TPCH_DIR}":/data -it --rm ghcr.io/scalytics/tpch-docker:main -vf -s ${SCALE_FACTOR}
+        docker run -v "${TPCH_DIR}":/data --rm ghcr.io/scalytics/tpch-docker:main -vf -s ${SCALE_FACTOR}
     fi
 
     # Copy expected answers into the ./data/answers directory if it does not already exist
@@ -288,7 +290,7 @@ data_tpch() {
     else
         echo " Copying answers to ${TPCH_DIR}/answers"
         mkdir -p "${TPCH_DIR}/answers"
-        docker run -v "${TPCH_DIR}":/data -it --entrypoint /bin/bash --rm ghcr.io/scalytics/tpch-docker:main  -c "cp -f /opt/tpch/2.18.0_rc2/dbgen/answers/* /data/answers/"
+        docker run -v "${TPCH_DIR}":/data --entrypoint /bin/bash --rm ghcr.io/scalytics/tpch-docker:main  -c "cp -f /opt/tpch/2.18.0_rc2/dbgen/answers/* /data/answers/"
     fi
 
     # Create 'parquet' files from tbl