Improve devbox polling: eliminate client-side sleep, enable HTTP/2#793
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Replace the client-side busy-poll loop (async_poll_until) for await_running with a new retry_server_poll_until that passes the remaining time budget to the server's wait_for_status endpoint as timeout_seconds. This eliminates a 30-second asyncio.sleep() between each long-poll attempt that was causing devbox startup times to cluster at 40s and 80s instead of the actual 3-5s provisioning time. Enable HTTP/2 by default on AsyncHttpxClient so that concurrent long-poll requests multiplex over fewer TCP connections instead of requiring one connection per in-flight request. For the Trajectory test, this dramatically improved the results with 494 concurrent devboxes: Before: p50=40.5s, p90=48.1s, max=80.9s After: p50=4.4s, p90=9.7s, max=20.6s
james-rl
approved these changes
May 1, 2026
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Replace the client-side busy-poll loop (async_poll_until) for await_running with a new retry_server_poll_until that passes the remaining time budget to the server's wait_for_status endpoint as timeout_seconds. This eliminates a 30-second asyncio.sleep() between each long-poll attempt that was causing devbox startup times to cluster at 40s and 80s instead of the actual 3-5s provisioning time.
Enable HTTP/2 by default on AsyncHttpxClient so that concurrent long-poll requests multiplex over fewer TCP connections instead of requiring one connection per in-flight request.
For the Trajectory test, this dramatically improved the results with 494 concurrent devboxes:
Before: p50=40.5s, p90=48.1s, max=80.9s
After: p50=4.4s, p90=9.7s, max=20.6s