ywkaras edited a comment on issue #7546: URL: https://github.com/apache/trafficserver/issues/7546#issuecomment-785425829
One thing I'm seeing is that, when one thread is blocked waiting on this memory allocation: https://github.com/apache/trafficserver/blob/564663b9b6888c8334ec8077b5583da9b192c3c2/proxy/logging/LogObject.cc#L399 , any other thread trying to reserve (checkout) buffer space from the same LogObject will keep getting the return value LB_RETRY from LogBuffer::writer_checkout(), and will thus busy wait. So we could be indirectly seeing the memory allocation blocking problem. If this is the case, it would likely help to execute a thread yield when the LB_RETRY return value is returned. I think I need to reproduce the problem with a baseline build, then see if this change improves things. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected]
