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Who can tell me why the Worker runtime environment of Cloudflare sometimes gets blocked for 15 minutes?

Open lazyanubis opened this issue 2 months ago • 5 comments

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lazyanubis avatar Nov 03 '25 15:11 lazyanubis

It seems that this request has already died, but why is it still blocking? It would be fine if there were some mistakes in the report. But now it just keeps stopping and doesn't move any further.

lazyanubis avatar Nov 03 '25 15:11 lazyanubis

Image And I set the CPU execution time to 3 minutes, but it had no effect at all.

lazyanubis avatar Nov 03 '25 15:11 lazyanubis

If there is a panic in your worker, then the request will stall.

We are working on a fix here to turn panics into immediate aborts which I am working on releasing in the coming release this week.

guybedford avatar Nov 03 '25 22:11 guybedford

Is there any progress? This is a problem I often encounter.

lazyanubis avatar Nov 27 '25 09:11 lazyanubis

The first fix we landed is that the Wasm is reinitialized automatically if running workers-rs after 0.6.7. This means the stalled requests will just be a few requests when there is a panic. The panic fix is ongoing work in wasm bindgen. In the latest version of wasm bindgen we now support building with unwind support in Rust. Follow-on to enable error recovery is in progress. Watching the wasm bindgen releases upstream for exception handling updates is one way to follow this work.

guybedford avatar Nov 28 '25 01:11 guybedford