Nginx reverse proxy apache2 High CPU load

Posted by chillah on Server Fault See other posts from Server Fault or by chillah
Published on 2012-12-16T12:29:19Z Indexed on 2012/12/16 17:06 UTC
Read the original article Hit count: 377

Filed under:

apache2

|

nginx

|

Wordpress

|

cpu

my server: 2x Intel Xeon 5506 2.13GHz 24 GB DDR3 RAM Debian 5.0.8 64-bit

My server CPU is aroung 90% at 600 users and around 6 page views per second.

There are 2 Sites on the server. One Forum with low visitors and a Wordpress page.

My Apache configurations:

MaxKeepAliveRequests 100

KeepAliveTimeout 15

ServerLimit 500
<IfModule mpm_prefork_module>
StartServers          5
MinSpareServers       5
MaxSpareServers      10
MaxClients          250
MaxRequestsPerChild 1000
</IfModule>

<IfModule mpm_worker_module>
StartServers          2
MaxClients          250
MinSpareThreads      25
MaxSpareThreads     150
ThreadsPerChild      25
MaxRequestsPerChild   0
</IfModule>

<IfModule mpm_worker_module>
StartServers          2
MaxClients          250
MinSpareThreads      25
MaxSpareThreads     150
ThreadsPerChild      25
MaxRequestsPerChild   0
</IfModule>

<IfModule mpm_event_module>
StartServers          2
MaxClients          150
MinSpareThreads      25
MaxSpareThreads      75 
ThreadLimit          64
ThreadsPerChild      25
MaxRequestsPerChild   0
</IfModule>

© Server Fault or respective owner

Related posts about apache2

apache2: Could not open configuration file /etc/apache2/apache2.conf: Permission denied

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I recently upgraded Ubuntu to the latest LTS edition on my work laptop, which I use as a LAMP development platform. The upgrade was from 12.4 to 14.4. Now I'm having trouble getting apache up and running again. Here is the output from an attempt: antonc@antonc-laptop:/etc/apache2$ sudo service apache2… >>> More
Apache segfault glibc segfault

as seen on Server Fault - Search for 'Server Fault'
I keep getting (about every 5-6 hours) this segfault in apache: [Tue Jun 26 12:43:10 2012] [notice] child pid 26810 exit signal Aborted (6) *** glibc detected *** /usr/sbin/apache2: free(): invalid pointer: 0xb68c2628 *** ======= Backtrace: ========= /lib/i386-linux-gnu/libc.so.6(+0x6ff22)[0xb75aef22] /lib/i386-linux-gnu/libc… >>> More
Localhost not working after installing PHP on Mountain Lion

as seen on Server Fault - Search for 'Server Fault'
I've installed php using brew install php54 --with-mysql, I've set up all the path correctly. which php will give me /usr/local/bin/php php -v will give me PHP 5.4.8 (cli) (built: Nov 20 2012 09:29:31) php --ini will give me: Configuration File (php.ini) Path: /usr/local/etc/php/5.4 Loaded Configuration… >>> More
Apache 2 Virtual Hosts no working on OSX 10.6

as seen on Server Fault - Search for 'Server Fault'
This is my first MacBook and I'm trying to get virtual hosts up and running so as it's going to be my dev machine. I've got apache/php/mysql running fine, the problem is that what ever address I go to I just get one of the virtual hosts I've setup. I can't even get to the root site anymore. I had… >>> More
apache2 error Could not open configuration file /etc/apache2/conf.d/: No such file or directory

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I have just upgraded my Ubuntu 13.10 and apache2 is not working. When I try to start the apache2 server it is printing following errors: * Starting web server apache2 * The apache2 configtest failed. Output of config test was: apache2: Syntax error on line 263 of /etc/apache2/apache2.conf: Could… >>> More

Related posts about nginx

ModSecurity compile error on nginx

as seen on Server Fault - Search for 'Server Fault'
I'm trying to install ModSecurity on nginx with the following instructions : wget https://github.com/SpiderLabs/ModSecurity/archive/master.zip unzip master cd ModSecurity-master ./autogen.sh ./configure --enable-standalone-module And i got the following error : Checking plataform... Identified… >>> More
Cannot Start Nginx Compiled from Source

as seen on Server Fault - Search for 'Server Fault'
I am trying to compile Nginx from source based on the original compiled Nginx server running on my DigitalOcean server ( Ubuntu-14.04 64x ) but with a few extra modules. I can get everything installed smoothly but I can not get it to start. I am sure the ini is correct because I copied the original… >>> More
Nginx http_mp4_module seam installed but dont work

as seen on Server Fault - Search for 'Server Fault'
I try to use the http_mp4_module on my Ubuntu server but that didnt seem to work at all. When i check nginx -V i get : nginx version: nginx/1.1.19 TLS SNI support enabled configure arguments: --prefix=/etc/nginx --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --http-client-body-temp-path=/var/lib/nginx/body… >>> More
GeoIP and Nginx

as seen on Server Fault - Search for 'Server Fault'
I have a nginx with geoip, but it is not working rightly. The issue is the next: Nginx are getting geodata from $_SERVER['REMOTE_ADDR'] instead of $_SERVER['HTTP_X_HAPROXY_IP'], which have the real client ip. So, the reported geodata belongs to my server ip instead of client ip. Does anybody where… >>> More
Nginx1.6.1: Installing from source not running corectly

as seen on Server Fault - Search for 'Server Fault'
I just installed Nginx 1.6.1 from source but it didn't seem to installed correctly. Nginx is running if I service nginx status but when I do nginx -v it outputs command not found. Regular HTML page shows fine and there is no error in the error logs. I am on AWS Ec2 linux AMI. Here is my /etc/init… >>> More