config question, is it good?

[Max]

Hello,

I got a server running Intel Xeon-Nehalem 5520-Quadcore 2.2GHz + 12 gb ram.
I got the following conf in my nginx, is it a good choice? But sometimes, I
still found the wordpress sites are kind of slow. Sometimes, it just take s
longer time to load a page and after that, the server just back to normal(wp
super cache is already running).

worker_processes  4;
worker_rlimit_nofile 10240;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;


events {
#    worker_connections  1024;
}

Thanks.

Max
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