From c94d6a89758e4bfbc0729cafa16e13dd38fea9a7 Mon Sep 17 00:00:00 2001
From: Manuel Trezza <5673677+mtrezza@users.noreply.github.com>
Date: Sun, 9 Nov 2025 01:00:47 +0100
Subject: [PATCH 01/10] lint

---
 benchmark/performance.js | 37 +++++++++++++++++++------------------
 1 file changed, 19 insertions(+), 18 deletions(-)

diff --git a/benchmark/performance.js b/benchmark/performance.js
index 831a57db37..6deb53378a 100644
--- a/benchmark/performance.js
+++ b/benchmark/performance.js
@@ -9,6 +9,7 @@
  */
 
 const Parse = require('parse/node');
+const logger = require('../lib/Logger').logger;
 const { performance, PerformanceObserver } = require('perf_hooks');
 const { MongoClient } = require('mongodb');
 
@@ -274,15 +275,15 @@ async function benchmarkUserLogin() {
  * Run all benchmarks
  */
 async function runBenchmarks() {
-  console.error('Starting Parse Server Performance Benchmarks...');
-  console.error(`Iterations per benchmark: ${ITERATIONS}`);
-  console.error('');
+  logger.error('Starting Parse Server Performance Benchmarks...');
+  logger.error(`Iterations per benchmark: ${ITERATIONS}`);
+  logger.error('');
 
   let server;
 
   try {
     // Initialize Parse Server
-    console.error('Initializing Parse Server...');
+    logger.error('Initializing Parse Server...');
     server = await initializeParseServer();
 
     // Wait for server to be ready
@@ -291,47 +292,47 @@ async function runBenchmarks() {
     const results = [];
 
     // Run each benchmark with database cleanup
-    console.error('Running Object Create benchmark...');
+    logger.error('Running Object Create benchmark...');
     await cleanupDatabase();
     results.push(await benchmarkObjectCreate());
 
-    console.error('Running Object Read benchmark...');
+    logger.error('Running Object Read benchmark...');
     await cleanupDatabase();
     results.push(await benchmarkObjectRead());
 
-    console.error('Running Object Update benchmark...');
+    logger.error('Running Object Update benchmark...');
     await cleanupDatabase();
     results.push(await benchmarkObjectUpdate());
 
-    console.error('Running Simple Query benchmark...');
+    logger.error('Running Simple Query benchmark...');
     await cleanupDatabase();
     results.push(await benchmarkSimpleQuery());
 
-    console.error('Running Batch Save benchmark...');
+    logger.error('Running Batch Save benchmark...');
     await cleanupDatabase();
     results.push(await benchmarkBatchSave());
 
-    console.error('Running User Signup benchmark...');
+    logger.error('Running User Signup benchmark...');
     await cleanupDatabase();
     results.push(await benchmarkUserSignup());
 
-    console.error('Running User Login benchmark...');
+    logger.error('Running User Login benchmark...');
     await cleanupDatabase();
     results.push(await benchmarkUserLogin());
 
     // Output results in github-action-benchmark format
-    console.log(JSON.stringify(results, null, 2));
+    logger.log(JSON.stringify(results, null, 2));
 
-    console.error('');
-    console.error('Benchmarks completed successfully!');
-    console.error('');
-    console.error('Summary:');
+    logger.error('');
+    logger.error('Benchmarks completed successfully!');
+    logger.error('');
+    logger.error('Summary:');
     results.forEach(result => {
-      console.error(`  ${result.name}: ${result.value.toFixed(2)} ${result.unit} (${result.extra})`);
+      logger.error(`  ${result.name}: ${result.value.toFixed(2)} ${result.unit} (${result.extra})`);
     });
 
   } catch (error) {
-    console.error('Error running benchmarks:', error);
+    logger.error('Error running benchmarks:', error);
     process.exit(1);
   } finally {
     // Cleanup

From ecdc0ae03dd216241e56fee39758807186f62aef Mon Sep 17 00:00:00 2001
From: Manuel Trezza <5673677+mtrezza@users.noreply.github.com>
Date: Sun, 9 Nov 2025 01:18:04 +0100
Subject: [PATCH 02/10] fix

---
 .github/workflows/ci-performance.yml | 10 ++--
 benchmark/performance.js             | 70 +++++++++++++++++-----------
 2 files changed, 49 insertions(+), 31 deletions(-)

diff --git a/.github/workflows/ci-performance.yml b/.github/workflows/ci-performance.yml
index 4ae8c80d67..67bc690e89 100644
--- a/.github/workflows/ci-performance.yml
+++ b/.github/workflows/ci-performance.yml
@@ -224,13 +224,13 @@ jobs:
             const changeStr = change > 0 ? \`+\${change.toFixed(1)}%\` : \`\${change.toFixed(1)}%\`;
 
             let status = '✅';
-            if (change > 20) {
+            if (change > 50) {
               status = '❌ Much Slower';
               hasRegression = true;
-            } else if (change > 10) {
+            } else if (change > 25) {
               status = '⚠️ Slower';
               hasRegression = true;
-            } else if (change < -10) {
+            } else if (change < -25) {
               status = '🚀 Faster';
               hasImprovement = true;
             }
@@ -281,7 +281,9 @@ jobs:
           echo "" >> comment.md
           echo "</details>" >> comment.md
           echo "" >> comment.md
-          echo "*Benchmarks ran with ${BENCHMARK_ITERATIONS:-100} iterations per test on Node.js ${{ env.NODE_VERSION }}*" >> comment.md
+          echo "*Benchmarks ran with ${BENCHMARK_ITERATIONS:-300} iterations per test on Node.js ${{ env.NODE_VERSION }}*" >> comment.md
+          echo "" >> comment.md
+          echo "> **Note:** Benchmarks run on shared CI infrastructure and may show ±20% variance between runs. Only sustained regressions >25% are flagged." >> comment.md
 
       - name: Comment PR with results
         if: github.event_name == 'pull_request'
diff --git a/benchmark/performance.js b/benchmark/performance.js
index 6deb53378a..5c8941fc40 100644
--- a/benchmark/performance.js
+++ b/benchmark/performance.js
@@ -18,7 +18,7 @@ const MONGODB_URI = process.env.MONGODB_URI || 'mongodb://localhost:27017/parse_
 const SERVER_URL = 'http://localhost:1337/parse';
 const APP_ID = 'benchmark-app-id';
 const MASTER_KEY = 'benchmark-master-key';
-const ITERATIONS = parseInt(process.env.BENCHMARK_ITERATIONS || '100', 10);
+const ITERATIONS = parseInt(process.env.BENCHMARK_ITERATIONS || '300', 10);
 
 // Parse Server instance
 let parseServer;
@@ -85,10 +85,18 @@ async function cleanupDatabase() {
 
 /**
  * Measure average time for an async operation over multiple iterations
+ * Uses warmup iterations, median metric, and outlier filtering for robustness
  */
 async function measureOperation(name, operation, iterations = ITERATIONS) {
+  const warmupCount = Math.floor(iterations * 0.2); // 20% warmup iterations
   const times = [];
 
+  // Warmup phase - stabilize JIT compilation and caches
+  for (let i = 0; i < warmupCount; i++) {
+    await operation();
+  }
+
+  // Measurement phase
   for (let i = 0; i < iterations; i++) {
     const start = performance.now();
     await operation();
@@ -96,22 +104,33 @@ async function measureOperation(name, operation, iterations = ITERATIONS) {
     times.push(end - start);
   }
 
-  // Calculate statistics
+  // Sort times for percentile calculations
   times.sort((a, b) => a - b);
-  const sum = times.reduce((acc, val) => acc + val, 0);
-  const mean = sum / times.length;
-  const p50 = times[Math.floor(times.length * 0.5)];
-  const p95 = times[Math.floor(times.length * 0.95)];
-  const p99 = times[Math.floor(times.length * 0.99)];
-  const min = times[0];
-  const max = times[times.length - 1];
+
+  // Filter outliers using Interquartile Range (IQR) method
+  const q1Index = Math.floor(times.length * 0.25);
+  const q3Index = Math.floor(times.length * 0.75);
+  const q1 = times[q1Index];
+  const q3 = times[q3Index];
+  const iqr = q3 - q1;
+  const lowerBound = q1 - 1.5 * iqr;
+  const upperBound = q3 + 1.5 * iqr;
+
+  const filtered = times.filter(t => t >= lowerBound && t <= upperBound);
+
+  // Calculate statistics on filtered data
+  const median = filtered[Math.floor(filtered.length * 0.5)];
+  const p95 = filtered[Math.floor(filtered.length * 0.95)];
+  const p99 = filtered[Math.floor(filtered.length * 0.99)];
+  const min = filtered[0];
+  const max = filtered[filtered.length - 1];
 
   return {
     name,
-    value: mean,
+    value: median, // Use median instead of mean for robustness
     unit: 'ms',
     range: `${min.toFixed(2)} - ${max.toFixed(2)}`,
-    extra: `p50: ${p50.toFixed(2)}ms, p95: ${p95.toFixed(2)}ms, p99: ${p99.toFixed(2)}ms`,
+    extra: `p95: ${p95.toFixed(2)}ms, p99: ${p99.toFixed(2)}ms, n=${filtered.length}/${times.length}`,
   };
 }
 
@@ -275,15 +294,14 @@ async function benchmarkUserLogin() {
  * Run all benchmarks
  */
 async function runBenchmarks() {
-  logger.error('Starting Parse Server Performance Benchmarks...');
-  logger.error(`Iterations per benchmark: ${ITERATIONS}`);
-  logger.error('');
+  logger.info('Starting Parse Server Performance Benchmarks...');
+  logger.info(`Iterations per benchmark: ${ITERATIONS}`);
 
   let server;
 
   try {
     // Initialize Parse Server
-    logger.error('Initializing Parse Server...');
+    logger.info('Initializing Parse Server...');
     server = await initializeParseServer();
 
     // Wait for server to be ready
@@ -292,43 +310,41 @@ async function runBenchmarks() {
     const results = [];
 
     // Run each benchmark with database cleanup
-    logger.error('Running Object Create benchmark...');
+    logger.info('Running Object Create benchmark...');
     await cleanupDatabase();
     results.push(await benchmarkObjectCreate());
 
-    logger.error('Running Object Read benchmark...');
+    logger.info('Running Object Read benchmark...');
     await cleanupDatabase();
     results.push(await benchmarkObjectRead());
 
-    logger.error('Running Object Update benchmark...');
+    logger.info('Running Object Update benchmark...');
     await cleanupDatabase();
     results.push(await benchmarkObjectUpdate());
 
-    logger.error('Running Simple Query benchmark...');
+    logger.info('Running Simple Query benchmark...');
     await cleanupDatabase();
     results.push(await benchmarkSimpleQuery());
 
-    logger.error('Running Batch Save benchmark...');
+    logger.info('Running Batch Save benchmark...');
     await cleanupDatabase();
     results.push(await benchmarkBatchSave());
 
-    logger.error('Running User Signup benchmark...');
+    logger.info('Running User Signup benchmark...');
     await cleanupDatabase();
     results.push(await benchmarkUserSignup());
 
-    logger.error('Running User Login benchmark...');
+    logger.info('Running User Login benchmark...');
     await cleanupDatabase();
     results.push(await benchmarkUserLogin());
 
     // Output results in github-action-benchmark format
     logger.log(JSON.stringify(results, null, 2));
 
-    logger.error('');
-    logger.error('Benchmarks completed successfully!');
-    logger.error('');
-    logger.error('Summary:');
+    logger.info('Benchmarks completed successfully!');
+    logger.info('Summary:');
     results.forEach(result => {
-      logger.error(`  ${result.name}: ${result.value.toFixed(2)} ${result.unit} (${result.extra})`);
+      logger.info(`  ${result.name}: ${result.value.toFixed(2)} ${result.unit} (${result.extra})`);
     });
 
   } catch (error) {

From a2cc0517e4b5f411a5536ed474d8387517523376 Mon Sep 17 00:00:00 2001
From: Manuel Trezza <5673677+mtrezza@users.noreply.github.com>
Date: Sun, 9 Nov 2025 01:22:02 +0100
Subject: [PATCH 03/10] log

---
 benchmark/performance.js | 35 +++++++++++++++++++----------------
 1 file changed, 19 insertions(+), 16 deletions(-)

diff --git a/benchmark/performance.js b/benchmark/performance.js
index 5c8941fc40..a5a7ee69bc 100644
--- a/benchmark/performance.js
+++ b/benchmark/performance.js
@@ -8,6 +8,8 @@
  * Run with: npm run benchmark
  */
 
+/* eslint-disable no-console */
+
 const Parse = require('parse/node');
 const logger = require('../lib/Logger').logger;
 const { performance, PerformanceObserver } = require('perf_hooks');
@@ -294,14 +296,14 @@ async function benchmarkUserLogin() {
  * Run all benchmarks
  */
 async function runBenchmarks() {
-  logger.info('Starting Parse Server Performance Benchmarks...');
-  logger.info(`Iterations per benchmark: ${ITERATIONS}`);
+  console.log('Starting Parse Server Performance Benchmarks...');
+  console.log(`Iterations per benchmark: ${ITERATIONS}`);
 
   let server;
 
   try {
     // Initialize Parse Server
-    logger.info('Initializing Parse Server...');
+    console.log('Initializing Parse Server...');
     server = await initializeParseServer();
 
     // Wait for server to be ready
@@ -310,45 +312,46 @@ async function runBenchmarks() {
     const results = [];
 
     // Run each benchmark with database cleanup
-    logger.info('Running Object Create benchmark...');
+    console.log('Running Object Create benchmark...');
     await cleanupDatabase();
     results.push(await benchmarkObjectCreate());
 
-    logger.info('Running Object Read benchmark...');
+    console.log('Running Object Read benchmark...');
     await cleanupDatabase();
     results.push(await benchmarkObjectRead());
 
-    logger.info('Running Object Update benchmark...');
+    console.log('Running Object Update benchmark...');
     await cleanupDatabase();
     results.push(await benchmarkObjectUpdate());
 
-    logger.info('Running Simple Query benchmark...');
+    console.log('Running Simple Query benchmark...');
     await cleanupDatabase();
     results.push(await benchmarkSimpleQuery());
 
-    logger.info('Running Batch Save benchmark...');
+    console.log('Running Batch Save benchmark...');
     await cleanupDatabase();
     results.push(await benchmarkBatchSave());
 
-    logger.info('Running User Signup benchmark...');
+    console.log('Running User Signup benchmark...');
     await cleanupDatabase();
     results.push(await benchmarkUserSignup());
 
-    logger.info('Running User Login benchmark...');
+    console.log('Running User Login benchmark...');
     await cleanupDatabase();
     results.push(await benchmarkUserLogin());
 
-    // Output results in github-action-benchmark format
-    logger.log(JSON.stringify(results, null, 2));
+    // Output results in github-action-benchmark format (stdout)
+    console.log(JSON.stringify(results, null, 2));
 
-    logger.info('Benchmarks completed successfully!');
-    logger.info('Summary:');
+    // Output summary to stderr for visibility
+    console.log('Benchmarks completed successfully!');
+    console.log('Summary:');
     results.forEach(result => {
-      logger.info(`  ${result.name}: ${result.value.toFixed(2)} ${result.unit} (${result.extra})`);
+      console.log(`  ${result.name}: ${result.value.toFixed(2)} ${result.unit} (${result.extra})`);
     });
 
   } catch (error) {
-    logger.error('Error running benchmarks:', error);
+    console.error('Error running benchmarks:', error);
     process.exit(1);
   } finally {
     // Cleanup

From a1cc5c38f9e3f9702aa5ab3f80809a22a3c2c36d Mon Sep 17 00:00:00 2001
From: Manuel Trezza <5673677+mtrezza@users.noreply.github.com>
Date: Sun, 9 Nov 2025 01:24:36 +0100
Subject: [PATCH 04/10] p95

---
 benchmark/performance.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/benchmark/performance.js b/benchmark/performance.js
index a5a7ee69bc..4b77a430fb 100644
--- a/benchmark/performance.js
+++ b/benchmark/performance.js
@@ -129,10 +129,10 @@ async function measureOperation(name, operation, iterations = ITERATIONS) {
 
   return {
     name,
-    value: median, // Use median instead of mean for robustness
+    value: p95, // Use p95 as primary metric (industry standard)
     unit: 'ms',
     range: `${min.toFixed(2)} - ${max.toFixed(2)}`,
-    extra: `p95: ${p95.toFixed(2)}ms, p99: ${p99.toFixed(2)}ms, n=${filtered.length}/${times.length}`,
+    extra: `median: ${median.toFixed(2)}ms, p99: ${p99.toFixed(2)}ms, n=${filtered.length}/${times.length}`,
   };
 }
 

From 450919aecc86d6173e7edadfc0dd236a6ad9250f Mon Sep 17 00:00:00 2001
From: Manuel Trezza <5673677+mtrezza@users.noreply.github.com>
Date: Sun, 9 Nov 2025 01:26:13 +0100
Subject: [PATCH 05/10] fix

---
 benchmark/performance.js | 1 -
 1 file changed, 1 deletion(-)

diff --git a/benchmark/performance.js b/benchmark/performance.js
index 4b77a430fb..d13d878c7d 100644
--- a/benchmark/performance.js
+++ b/benchmark/performance.js
@@ -11,7 +11,6 @@
 /* eslint-disable no-console */
 
 const Parse = require('parse/node');
-const logger = require('../lib/Logger').logger;
 const { performance, PerformanceObserver } = require('perf_hooks');
 const { MongoClient } = require('mongodb');
 

From 4f1b7f89c2661f565862743e22eb058333f39c88 Mon Sep 17 00:00:00 2001
From: Manuel Trezza <5673677+mtrezza@users.noreply.github.com>
Date: Sun, 9 Nov 2025 01:31:25 +0100
Subject: [PATCH 06/10] fix

---
 .github/workflows/ci-performance.yml | 10 +++++-----
 CONTRIBUTING.md                      |  2 +-
 benchmark/performance.js             |  2 +-
 3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/.github/workflows/ci-performance.yml b/.github/workflows/ci-performance.yml
index 67bc690e89..0fe48eb04e 100644
--- a/.github/workflows/ci-performance.yml
+++ b/.github/workflows/ci-performance.yml
@@ -224,13 +224,13 @@ jobs:
             const changeStr = change > 0 ? \`+\${change.toFixed(1)}%\` : \`\${change.toFixed(1)}%\`;
 
             let status = '✅';
-            if (change > 50) {
+            if (change > 100) {
               status = '❌ Much Slower';
               hasRegression = true;
-            } else if (change > 25) {
+            } else if (change > 50) {
               status = '⚠️ Slower';
               hasRegression = true;
-            } else if (change < -25) {
+            } else if (change < -50) {
               status = '🚀 Faster';
               hasImprovement = true;
             }
@@ -281,9 +281,9 @@ jobs:
           echo "" >> comment.md
           echo "</details>" >> comment.md
           echo "" >> comment.md
-          echo "*Benchmarks ran with ${BENCHMARK_ITERATIONS:-300} iterations per test on Node.js ${{ env.NODE_VERSION }}*" >> comment.md
+          echo "*Benchmarks ran with ${BENCHMARK_ITERATIONS:-1000} iterations per test on Node.js ${{ env.NODE_VERSION }}*" >> comment.md
           echo "" >> comment.md
-          echo "> **Note:** Benchmarks run on shared CI infrastructure and may show ±20% variance between runs. Only sustained regressions >25% are flagged." >> comment.md
+          echo "> **Note:** Benchmarks run on shared CI infrastructure and may show ±30% variance between runs. Only regressions >50% are flagged as concerning." >> comment.md
 
       - name: Comment PR with results
         if: github.event_name == 'pull_request'
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index f79caa4236..d3e61e637c 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -341,7 +341,7 @@ Performance benchmarks are located in [`benchmark/performance.js`](benchmark/per
 4. **Test locally**: Run the benchmarks locally to verify they work:
    ```bash
    npm run benchmark:quick  # Quick test with 10 iterations
-   npm run benchmark        # Full test with 100 iterations
+   npm run benchmark        # Full test with 1000 iterations
    ```
 
 For new features where no baseline exists, the CI will establish new benchmarks that future PRs will be compared against.
diff --git a/benchmark/performance.js b/benchmark/performance.js
index d13d878c7d..9bdd066779 100644
--- a/benchmark/performance.js
+++ b/benchmark/performance.js
@@ -19,7 +19,7 @@ const MONGODB_URI = process.env.MONGODB_URI || 'mongodb://localhost:27017/parse_
 const SERVER_URL = 'http://localhost:1337/parse';
 const APP_ID = 'benchmark-app-id';
 const MASTER_KEY = 'benchmark-master-key';
-const ITERATIONS = parseInt(process.env.BENCHMARK_ITERATIONS || '300', 10);
+const ITERATIONS = parseInt(process.env.BENCHMARK_ITERATIONS || '1000', 10);
 
 // Parse Server instance
 let parseServer;

From 9fb692c4a39aed17cdefa7e7a00ea93d966ff978 Mon Sep 17 00:00:00 2001
From: Manuel Trezza <5673677+mtrezza@users.noreply.github.com>
Date: Sun, 9 Nov 2025 01:32:40 +0100
Subject: [PATCH 07/10] median

---
 benchmark/performance.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/benchmark/performance.js b/benchmark/performance.js
index 9bdd066779..8f40e471eb 100644
--- a/benchmark/performance.js
+++ b/benchmark/performance.js
@@ -128,10 +128,10 @@ async function measureOperation(name, operation, iterations = ITERATIONS) {
 
   return {
     name,
-    value: p95, // Use p95 as primary metric (industry standard)
+    value: median, // Use median (p50) as primary metric for stability in CI
     unit: 'ms',
     range: `${min.toFixed(2)} - ${max.toFixed(2)}`,
-    extra: `median: ${median.toFixed(2)}ms, p99: ${p99.toFixed(2)}ms, n=${filtered.length}/${times.length}`,
+    extra: `p95: ${p95.toFixed(2)}ms, p99: ${p99.toFixed(2)}ms, n=${filtered.length}/${times.length}`,
   };
 }
 

From 9e92063cf85dfb5d4f000a4f849ab2cfdc08dea9 Mon Sep 17 00:00:00 2001
From: Manuel Trezza <5673677+mtrezza@users.noreply.github.com>
Date: Sun, 9 Nov 2025 01:47:18 +0100
Subject: [PATCH 08/10] fix

---
 .github/workflows/ci-performance.yml | 16 ++++++++++------
 CONTRIBUTING.md                      |  2 +-
 benchmark/performance.js             |  4 +++-
 3 files changed, 14 insertions(+), 8 deletions(-)

diff --git a/.github/workflows/ci-performance.yml b/.github/workflows/ci-performance.yml
index 0fe48eb04e..9d79b53883 100644
--- a/.github/workflows/ci-performance.yml
+++ b/.github/workflows/ci-performance.yml
@@ -47,6 +47,8 @@ jobs:
 
       - name: Run baseline benchmarks
         id: baseline
+        env:
+          NODE_ENV: production
         run: |
           echo "Checking if benchmark script exists..."
           if [ ! -f "benchmark/performance.js" ]; then
@@ -56,8 +58,8 @@ jobs:
             echo "Baseline: N/A (benchmark script not in base branch)" > baseline-output.txt
             exit 0
           fi
-          echo "Running baseline benchmarks..."
-          npm run benchmark > baseline-output.txt 2>&1 || true
+          echo "Running baseline benchmarks with CPU affinity..."
+          taskset -c 0 npm run benchmark > baseline-output.txt 2>&1 || npm run benchmark > baseline-output.txt 2>&1 || true
           echo "Benchmark command completed with exit code: $?"
           echo "Output file size: $(wc -c < baseline-output.txt) bytes"
           echo "--- Begin baseline-output.txt ---"
@@ -111,9 +113,11 @@ jobs:
 
       - name: Run PR benchmarks
         id: pr-bench
+        env:
+          NODE_ENV: production
         run: |
-          echo "Running PR benchmarks..."
-          npm run benchmark > pr-output.txt 2>&1 || true
+          echo "Running PR benchmarks with CPU affinity..."
+          taskset -c 0 npm run benchmark > pr-output.txt 2>&1 || npm run benchmark > pr-output.txt 2>&1 || true
           echo "Benchmark command completed with exit code: $?"
           echo "Output file size: $(wc -c < pr-output.txt) bytes"
           echo "--- Begin pr-output.txt ---"
@@ -281,9 +285,9 @@ jobs:
           echo "" >> comment.md
           echo "</details>" >> comment.md
           echo "" >> comment.md
-          echo "*Benchmarks ran with ${BENCHMARK_ITERATIONS:-1000} iterations per test on Node.js ${{ env.NODE_VERSION }}*" >> comment.md
+          echo "*Benchmarks ran with ${BENCHMARK_ITERATIONS:-100000} iterations per test on Node.js ${{ env.NODE_VERSION }} (production mode, CPU pinned)*" >> comment.md
           echo "" >> comment.md
-          echo "> **Note:** Benchmarks run on shared CI infrastructure and may show ±30% variance between runs. Only regressions >50% are flagged as concerning." >> comment.md
+          echo "> **Note:** Using 100k iterations with CPU affinity for measurement stability. Thresholds: ⚠️ >50%, ❌ >100%." >> comment.md
 
       - name: Comment PR with results
         if: github.event_name == 'pull_request'
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index d3e61e637c..b1f7958240 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -341,7 +341,7 @@ Performance benchmarks are located in [`benchmark/performance.js`](benchmark/per
 4. **Test locally**: Run the benchmarks locally to verify they work:
    ```bash
    npm run benchmark:quick  # Quick test with 10 iterations
-   npm run benchmark        # Full test with 1000 iterations
+   npm run benchmark        # Full test with 100,000 iterations
    ```
 
 For new features where no baseline exists, the CI will establish new benchmarks that future PRs will be compared against.
diff --git a/benchmark/performance.js b/benchmark/performance.js
index 8f40e471eb..ee99197b5e 100644
--- a/benchmark/performance.js
+++ b/benchmark/performance.js
@@ -19,7 +19,7 @@ const MONGODB_URI = process.env.MONGODB_URI || 'mongodb://localhost:27017/parse_
 const SERVER_URL = 'http://localhost:1337/parse';
 const APP_ID = 'benchmark-app-id';
 const MASTER_KEY = 'benchmark-master-key';
-const ITERATIONS = parseInt(process.env.BENCHMARK_ITERATIONS || '1000', 10);
+const ITERATIONS = parseInt(process.env.BENCHMARK_ITERATIONS || '100000', 10);
 
 // Parse Server instance
 let parseServer;
@@ -41,6 +41,8 @@ async function initializeParseServer() {
     serverURL: SERVER_URL,
     silent: true,
     allowClientClassCreation: true,
+    logLevel: 'error', // Minimal logging for performance
+    verbose: false,
   });
 
   app.use('/parse', parseServer.app);

From d7616234411d2b92e815392642e2aae62b408618 Mon Sep 17 00:00:00 2001
From: Manuel Trezza <5673677+mtrezza@users.noreply.github.com>
Date: Sun, 9 Nov 2025 01:58:05 +0100
Subject: [PATCH 09/10] fix

---
 .github/workflows/ci-performance.yml | 31 ++++++++++++++++++++++------
 CONTRIBUTING.md                      |  2 +-
 benchmark/performance.js             |  2 +-
 3 files changed, 27 insertions(+), 8 deletions(-)

diff --git a/.github/workflows/ci-performance.yml b/.github/workflows/ci-performance.yml
index 9d79b53883..438f5b1233 100644
--- a/.github/workflows/ci-performance.yml
+++ b/.github/workflows/ci-performance.yml
@@ -27,11 +27,31 @@ jobs:
     timeout-minutes: 30
 
     steps:
+      - name: Checkout PR branch (for benchmark script)
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
+          fetch-depth: 1
+
+      - name: Save PR benchmark script
+        run: |
+          mkdir -p /tmp/pr-benchmark
+          cp -r benchmark /tmp/pr-benchmark/ || echo "No benchmark directory"
+          cp package.json /tmp/pr-benchmark/ || true
+
       - name: Checkout base branch
         uses: actions/checkout@v4
         with:
           ref: ${{ github.base_ref }}
           fetch-depth: 1
+          clean: true
+
+      - name: Restore PR benchmark script
+        run: |
+          if [ -d "/tmp/pr-benchmark/benchmark" ]; then
+            rm -rf benchmark
+            cp -r /tmp/pr-benchmark/benchmark .
+          fi
 
       - name: Setup Node.js
         uses: actions/setup-node@v4
@@ -50,15 +70,14 @@ jobs:
         env:
           NODE_ENV: production
         run: |
-          echo "Checking if benchmark script exists..."
+          echo "Running baseline benchmarks with CPU affinity (using PR's benchmark script)..."
           if [ ! -f "benchmark/performance.js" ]; then
-            echo "⚠️ Benchmark script not found in base branch - this is expected for new features"
+            echo "⚠️ Benchmark script not found - this is expected for new features"
             echo "Skipping baseline benchmark"
             echo '[]' > baseline.json
-            echo "Baseline: N/A (benchmark script not in base branch)" > baseline-output.txt
+            echo "Baseline: N/A (no benchmark script)" > baseline-output.txt
             exit 0
           fi
-          echo "Running baseline benchmarks with CPU affinity..."
           taskset -c 0 npm run benchmark > baseline-output.txt 2>&1 || npm run benchmark > baseline-output.txt 2>&1 || true
           echo "Benchmark command completed with exit code: $?"
           echo "Output file size: $(wc -c < baseline-output.txt) bytes"
@@ -285,9 +304,9 @@ jobs:
           echo "" >> comment.md
           echo "</details>" >> comment.md
           echo "" >> comment.md
-          echo "*Benchmarks ran with ${BENCHMARK_ITERATIONS:-100000} iterations per test on Node.js ${{ env.NODE_VERSION }} (production mode, CPU pinned)*" >> comment.md
+          echo "*Benchmarks ran with ${BENCHMARK_ITERATIONS:-1000} iterations per test on Node.js ${{ env.NODE_VERSION }} (production mode, CPU pinned)*" >> comment.md
           echo "" >> comment.md
-          echo "> **Note:** Using 100k iterations with CPU affinity for measurement stability. Thresholds: ⚠️ >50%, ❌ >100%." >> comment.md
+          echo "> **Note:** Using 1k iterations with CPU affinity for measurement stability. Thresholds: ⚠️ >50%, ❌ >100%." >> comment.md
 
       - name: Comment PR with results
         if: github.event_name == 'pull_request'
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index b1f7958240..8e3db29efa 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -341,7 +341,7 @@ Performance benchmarks are located in [`benchmark/performance.js`](benchmark/per
 4. **Test locally**: Run the benchmarks locally to verify they work:
    ```bash
    npm run benchmark:quick  # Quick test with 10 iterations
-   npm run benchmark        # Full test with 100,000 iterations
+   npm run benchmark        # Full test with 1,000 iterations
    ```
 
 For new features where no baseline exists, the CI will establish new benchmarks that future PRs will be compared against.
diff --git a/benchmark/performance.js b/benchmark/performance.js
index ee99197b5e..0c2dffc211 100644
--- a/benchmark/performance.js
+++ b/benchmark/performance.js
@@ -19,7 +19,7 @@ const MONGODB_URI = process.env.MONGODB_URI || 'mongodb://localhost:27017/parse_
 const SERVER_URL = 'http://localhost:1337/parse';
 const APP_ID = 'benchmark-app-id';
 const MASTER_KEY = 'benchmark-master-key';
-const ITERATIONS = parseInt(process.env.BENCHMARK_ITERATIONS || '100000', 10);
+const ITERATIONS = parseInt(process.env.BENCHMARK_ITERATIONS || '1000', 10);
 
 // Parse Server instance
 let parseServer;

From 28cf8f3b7e9b73e7997abbf2850ad768bee82a7b Mon Sep 17 00:00:00 2001
From: Manuel Trezza <5673677+mtrezza@users.noreply.github.com>
Date: Sun, 9 Nov 2025 02:01:22 +0100
Subject: [PATCH 10/10] fix

---
 .github/workflows/ci-performance.yml | 4 ++--
 CONTRIBUTING.md                      | 2 +-
 benchmark/performance.js             | 4 ++--
 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/.github/workflows/ci-performance.yml b/.github/workflows/ci-performance.yml
index 438f5b1233..3fd2200d02 100644
--- a/.github/workflows/ci-performance.yml
+++ b/.github/workflows/ci-performance.yml
@@ -304,9 +304,9 @@ jobs:
           echo "" >> comment.md
           echo "</details>" >> comment.md
           echo "" >> comment.md
-          echo "*Benchmarks ran with ${BENCHMARK_ITERATIONS:-1000} iterations per test on Node.js ${{ env.NODE_VERSION }} (production mode, CPU pinned)*" >> comment.md
+          echo "*Benchmarks ran with ${BENCHMARK_ITERATIONS:-10000} iterations per test on Node.js ${{ env.NODE_VERSION }} (production mode, CPU pinned)*" >> comment.md
           echo "" >> comment.md
-          echo "> **Note:** Using 1k iterations with CPU affinity for measurement stability. Thresholds: ⚠️ >50%, ❌ >100%." >> comment.md
+          echo "> **Note:** Using 10k iterations with CPU affinity for measurement stability. Thresholds: ⚠️ >50%, ❌ >100%." >> comment.md
 
       - name: Comment PR with results
         if: github.event_name == 'pull_request'
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 8e3db29efa..30050f87a6 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -341,7 +341,7 @@ Performance benchmarks are located in [`benchmark/performance.js`](benchmark/per
 4. **Test locally**: Run the benchmarks locally to verify they work:
    ```bash
    npm run benchmark:quick  # Quick test with 10 iterations
-   npm run benchmark        # Full test with 1,000 iterations
+   npm run benchmark        # Full test with 10,000 iterations
    ```
 
 For new features where no baseline exists, the CI will establish new benchmarks that future PRs will be compared against.
diff --git a/benchmark/performance.js b/benchmark/performance.js
index 0c2dffc211..7021ed35b3 100644
--- a/benchmark/performance.js
+++ b/benchmark/performance.js
@@ -19,7 +19,7 @@ const MONGODB_URI = process.env.MONGODB_URI || 'mongodb://localhost:27017/parse_
 const SERVER_URL = 'http://localhost:1337/parse';
 const APP_ID = 'benchmark-app-id';
 const MASTER_KEY = 'benchmark-master-key';
-const ITERATIONS = parseInt(process.env.BENCHMARK_ITERATIONS || '1000', 10);
+const ITERATIONS = parseInt(process.env.BENCHMARK_ITERATIONS || '10000', 10);
 
 // Parse Server instance
 let parseServer;
@@ -363,7 +363,7 @@ async function runBenchmarks() {
       server.close();
     }
     // Give some time for cleanup
-    setTimeout(() => process.exit(0), 1000);
+    setTimeout(() => process.exit(0), 10000);
   }
 }