[libmicrohttpd] MHD Conection timeout seems to hog the CPU

[David J Myers]

Hi,

My video streaming webserver can stream multiple video streams simultaneously, and these streams can come and go, ie start and stop.

 

It seems that when a connection closes (client navigates away), and after the MHD_OPTION_CONNECTION_TIMEOUT has expired, my main process thread is halted for up to one second. If I change the timeout, the halt seems to follow the new value ie if I set this to 10 seconds, I get a pause in my main thread 10 seconds after a video connection closes. This is very bad for me as all remaining video streams stutter and jerk for up to one second.

 

Is there any known CPU-intensive processing in MHD which happens when a connection closes? I am using a thread pool but this also happens if I switch to MHD_USE_THREAD_PER_CONNECTION mode.

 

Any advice would be gratefully received.

 

Best regards

David