This repository is used to test and profile memory usage in Cloudflare Workers with Sentry instrumentation.

$ pnpm i

Follow these steps to profile memory usage using DevTools snapshots. For more details, see the Cloudflare documentation on memory profiling.

1. Start the development server

   $ pnpm dev

2. Open DevTools

   Press d in the terminal to open DevTools, then navigate to the "Memory" tab.

3. Take an initial snapshot

   Click "Take snapshot" to capture the baseline memory state.

4. Run load tests (in a separate terminal)

   $ pnpm load-test

   The load test runs for ~2 minutes with increasing traffic:

   • 30s warm up at 10 req/s
   • 60s ramp up at 50 req/s
   • 30s sustained load at 100 req/s

5. Compare snapshots

   Take additional snapshots during or after the load test to compare memory usage over time.

To investigate memory differences between versions, compare snapshots between these commits:

# Checkout baseline commit
$ git checkout c0decd222ec0e98303b7d7c600eb7c5dbd574d33
$ pnpm i
# Run profiling steps above, take snapshots

# Checkout fix commit
$ git checkout bce192b9a3b0685a35c1bee2a07b6ad3113da329
$ pnpm i
# Run profiling steps above, compare snapshots