On Fri, 15 Jun 2012 11:46:50 +0700 Benny Prijono <bennylp at teluu.com> wrote: > IOCP ioqueue has been deprecated and we haven't used it for long time. > Please use select ioqueue. Why? IOCP is superior in performance by design. As I also noted, select() backend has also problems that make it bad for me. See: http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/2012-June/014742.html BTW. I would expect the memory corruption here happening exactly based on what I observed: at least in transport_send_rtp() it is not checked if the pending request is already in use - it'll just get reused blindly, and will result in bad things if it was pending. Increasing MAX_PENDING might help a bit - but the proper fix is to have the code check if pending queue is full and then make it start dropping packets properly. And as noted, MAX_PENDING should be large enough to accommodate almost the number of packets the sound card can send in one burst (about worth half of the latency or so). -Timo
