High CPU Usage and NGINX Hangup

[loki]

I am now seeing a bunch of epoll_waits in the strace. Multiple master
processes spawn.

4519       0.000000 epoll_wait(143, {}, 512, 500) = 0
4519       0.500833 epoll_wait(143, {}, 512, 500) = 0
4519       0.500785 epoll_wait(143, {}, 512, 500) = 0
4519       0.500756 epoll_wait(143, {}, 512, 500) = 0
4519       0.500742 epoll_wait(143, {}, 512, 500) = 0
4519       0.500760 epoll_wait(143, {}, 512, 500) = 0
4519       0.500815 epoll_wait(143, {}, 512, 500) = 0
4519       0.500792 epoll_wait(143, {}, 512, 500) = 0
4519       0.500727 epoll_wait(143, {}, 512, 500) = 0
4519       0.500760 epoll_wait(143, {}, 512, 500) = 0
4519       0.500754 epoll_wait(143, {}, 512, 500) = 0
4519       0.500702 epoll_wait(143, {}, 512, 500) = 0
4519       0.500742 epoll_wait(143, {}, 512, 500) = 0
4519       0.500751 epoll_wait(143, {}, 512, 500) = 0
4519       0.500786 epoll_wait(143, {}, 512, 500) = 0
4519       0.500764 epoll_wait(143, {}, 512, 500) = 0
4519       0.500743 epoll_wait(143, {}, 512, 500) = 0

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,248055,248119#msg-248119