swoole:5.1.2-php8.3 - Maximum call stack size of 8339456 bytes (zend.max_allowed_stack_size - zend.reserved_stack_size) reached. about swoole-src

[NathanFreeman]

I am trying to reproduce the issue by stress-testing the code for a long time with wrk.

[ValiDrv]

For the 504 http code errors, wrk will not work, since it counts responses and not the response code. So if one takes 2 min it still counts it as GOOD.
Use ab, and you see the non 200 response codes.
(basically I could replicate it about 20 times more often with ab compared to wrk)

Also, it seems unrelated to the number of requests/load past a certain amount. As in, I got 12 failures in 1000 requests, and 16 in 10k requests.

For the Maximum call stack ... reached. Infinite recursion it seems more related to how/when the server is restarted. Sometimes I don't get it for days/weeks, other times I get it on every request. (so we just deploy a few times until it doesn't happen)
And once running, it just "randomly" happens for a few minutes, and then stops by itself.

[NathanFreeman]

@ValiDrv
We have released Swoole v5.1.3. You can try Swoole v5.1.3 to see if this issue still exists.

[ValiDrv]

We moved away from using dispatch_func in production, but will keep an eye on it.