优化 Nginx worker 进程最大打开文件数

[root@localhost ~]# cat /usr/local/nginx/conf/nginx.conf
worker_processes  2;
worker_cpu_affinity 01 10;
worker_rlimit_nofile 65535;    # worker 进程最大打开文件数，可设置为优化后的 ulimit -HSn 的结果
user nginx nginx;
events {
    worker_connections  1024;
}
http {
    include       mime.types;
    default_type  application/octet-stream;
    sendfile        on;
    keepalive_timeout  65;
    server_tokens   off;
    server {
        listen       80;
        server_name  www.abc.com;
        location / {
            root   html/www;
            index  index.html index.htm;
        }
    }
}