Nginx high load average

Server NGINX
1

hello

i have server running as shared server Intel(R) Xeon(R) CPU E3-1225 V2 @
3.20GHz 4 core and 16 g.b ram running onCentOS release 5.9 (Final)
upload
and download via php scripts like rapidshare

the problem is i have high connections on this server and i want to know
how
could i configure the nginx correctly

here is my current nginx.conf

user nobody;

no need for more workers in the proxy mode

worker_processes 1;

error_log logs/error.log info;

worker_rlimit_nofile 8192;

events {
worker_connections 51200; # you might need to increase this setting
for
busy servers
use epoll; # Linux kernels 2.4.x change to rtsig
}

http {
server_names_hash_max_size 2048;

include mime.types;
default_type application/octet-stream;

sendfile on;
tcp_nopush on;
tcp_nodelay on;

keepalive_timeout 10;

gzip on;
gzip_min_length 1100;
gzip_buffers 4 32k;
gzip_types text/plain application/x-javascript text/xml text/css;
ignore_invalid_headers on;

client_header_timeout 3m;
client_body_timeout 3m;
send_timeout 3m;
connection_pool_size 1024;
client_header_buffer_size 4k;
large_client_header_buffers 4 32k;
request_pool_size 4k;
output_buffers 4 32k;
postpone_output 1460;
proxy_temp_path /home/proxy_temp;
include “/usr/local/nginx/conf/vhost.conf”;
}

Posted at Nginx Forum:

2

‘worker_processes’ should be equal to total numbers of CPU cores.

What does ‘high connections’ mean?

Please show the result of ‘cat /proc/net/sockstat’, and the content of ’
/usr/local/nginx/conf/vhost.conf’.

3

It’s very unlikely that nginx is causing a high load average. If I
separate it off from the php/database processing, I can run it on a low
power, single threaded vps with 128MB memory.

What process is really using your CPU?

Steve

4

this is a shared server like any other shared sites support download and
upload files like movies and programs , stuff over 1 and 2 gigabyte for
download and upload , i am trying to adjust the connections in the
server to
work good with nginx , and this is my vhost.conf

high connection mean alot of visitors established connection in my
server

  4 TIME_WAIT
  9 SYN_RECV
  2 LISTEN
 40 LAST_ACK
988 ESTABLISHED

and this is vhost.conf

server {

access_log off;

error_log logs/vhost-error_log warn;
listen 80;
server_name site.com www.site.com;

uncomment location below to make nginx serve static files instead of

Apache

NOTE this will cause issues with bandwidth accounting as files wont

be
logged
location
~.*.(3gp|gif|jpg|jpeg|png|ico|wmv|avi|asf|asx|mpg|mpeg|mp4|pls|mp3|mid|wav|swf|flv|html|htm|txt|js|css|exe|zip|tar|rar|gz|tgz|bz2|uha|7z|doc|docx|xls|xlsx|pdf|iso)$
{
root /home3/s9/public_html;
}

location / {
proxy_send_timeout 90;
proxy_read_timeout 90;

proxy_buffer_size 4k;

you can increase proxy_buffers here to suppress "an upstream

response

is buffered to a temporary file" warning

proxy_buffers 16 32k;
proxy_busy_buffers_size 64k;
proxy_temp_file_write_size 64k;

proxy_connect_timeout 30s;

proxy_redirect http://www.site.com:81 http://www.site.com;
proxy_redirect http://site.com:81 http://site.com;

proxy_pass http://192.168.0.1:81/;

proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

        # track uploads in the 'proxied' zone
        # remember connections for 30s after they finished
        track_uploads proxied 30s;

}
location ^~ /progress {
# report uploads tracked in the ‘proxied’ zone
report_uploads proxied;
}
}

Posted at Nginx Forum: