I have recently upgraded to Nginx-1.6.0 from 1.4.2 and I am seeing that
Nginx is swapping a lot. I have tried reducing vm.swappiness=0 but has not
worked. This continues to happen on multiple servers that are running
Nginx-1.6.0:
s, 1:16, 2 users, load average: 1.38, 2.32, 4.32
Tasks: 467 total
I am now seeing a bunch of epoll_waits in the strace. Multiple master
processes spawn.
4519 0.00 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)
I am seeing my NGINX server randomly hangup. Multiple worker processes
utilizing 100% CPU. I see the hangups in strace, but not quite sure what
would be causing the issue.
0.81 futex(0x7f563c893068, FUTEX_WAIT, 0, NULL) = ? ERESTARTSYS (To be
restarted)
92.011974 --- SIGHUP (Hangup) @ 0 (0
