For experimenting purposes / measuring the difference against what would be a (better) behaving epoll_wait usage, I created: https://github.com/jjo/dl-hack-lp1518430 , which implements hooking epoll_wait() and select() (via LD_PRELOAD) to limit the rate of calls with zero timeouts.
WfM'd on an experimental stack, on one node hosting all OS API LXCs and nova-compute, I measured a 700K/s -> 120K/s reduction of epoll_wait calls (as shown by: sysdig -c topscalls). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1518430 Title: liberty: ~busy loop on epoll_wait being called with zero timeout To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1518430/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
