Difference between revisions of "Optimize VPS webserver with low memory RAM"

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This guide is to help run a VPS with 512MB RAM as a webserver. The default settings in Apache/PHP/MySQL are not optimized for a VPS much less one with 512MB RAM. This guide will reduce your overall memory usage of your LAMP server.
 
This guide is to help run a VPS with 512MB RAM as a webserver. The default settings in Apache/PHP/MySQL are not optimized for a VPS much less one with 512MB RAM. This guide will reduce your overall memory usage of your LAMP server.
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[[Category:Linux]]
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'''If you are still using 512MB VPS you should switch. This guide is now defunct'''
  
  

Latest revision as of 15:48, 25 July 2015

This guide is to help run a VPS with 512MB RAM as a webserver. The default settings in Apache/PHP/MySQL are not optimized for a VPS much less one with 512MB RAM. This guide will reduce your overall memory usage of your LAMP server. If you are still using 512MB VPS you should switch. This guide is now defunct


Apache

CentOS location: /etc/httpd/conf/httpd.conf


  • Change the settings for the prefork module
<IfModule prefork.c>
StartServers 1
MinSpareServers 1
MaxSpareServers 4
ServerLimit      15
MaxClients       15
MaxRequestsPerChild 2000
</IfModule>


PHP

CentOS PHP config location: /etc/php.ini


  • Change max memory limit (use 96MB for heavy php sites)
memory_limit = 64M
  • Change max execution time
max_execution_time = 60
  • Change max input time
max_input_time = 60
  • Change max upload size
upload_max_filesize = 16M
  • Change max upload size
post_max_size = 16M
  • Disable PHP safemode
safe_mode = Off
  • Disable MySQL safemode
sql.safe_mode = Off
  • Enable zlib Compression (compresses site output)
zlib.output_compression = On
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