Hello,

We ran into a strange issue today. We start settings aio thread on our storage (streaming) server. There’s 2 server which different settings:

Server 1:

aio on;

Server 2:

thread_pool streaming threads=128 max_queue=65536;
aio threads=streaming;


Just after restart 2 servers, server1 can run well without any problem.
On server2, which run by server www, cannot do anything else (for example execute bash by www), resource temporary unavailable
I try to check what is going on.

On server1:

lsof | grep -i www | wc -l
3188


Server 2:
lsof | grep -i www | wc -l
346716

There’s many socket open on server 2:
lsof | grep -i www

nginx 188346 190631 www 43u unix 0xffff91a357d1fc00 0t0 14505437 socket
nginx 188346 190631 www 45u unix 0xffff91a357d1d800 0t0 14505439 socket
nginx 188346 190631 www 47u unix 0xffff91a357d1dc00 0t0 14505441 socket
nginx 188346 190631 www 49u unix 0xffff91a357d1c800 0t0 14505443 socket
nginx 188346 190631 www 51u unix 0xffff91ab9ada5800 0t0 14505445 socket
nginx 188346 190631 www 53u unix 0xffff91a364637800 0t0 14505447 socket
nginx 188346 190631 www 55u unix 0xffff91a364633000 0t0 14505449 socket
nginx 188346 190631 www 57u unix 0xffff91a364636000 0t0 14505451 socket
nginx 188346 190631 www 59u unix 0xffff91a364631c00 0t0 14505453 socket
nginx 188346 190631 www 61u unix 0xffff91a364632000 0t0 14505455 socket
nginx 188346 190631 www 63u unix 0xffff91a364636800 0t0 14505457 socket
nginx 188346 190631 www 65u unix 0xffff91a364634000 0t0 14505459 socket
nginx 188346 190631 www 67u unix 0xffff91a364637400 0t0 14505461 socket
nginx 188346 190631 www 69u unix 0xffff91a364632400 0t0 14505463 socket
nginx 188346 190631 www 72u unix 0xffff91b278e95c00 0t0 14505466 socket

Can you tell me what is going on here?

-
hungnv