Apache configuration for busy site

tagteam

• October 10, 2022 15:02

I am trying to configure my site to be able to handle more traffic because it bogs down when I get about 150 concurrent users. I have been looking at tweaking the configs but I am confused because I think my managed host provider has added some stuff to the config. If you log in to WHM and select Apache global configuration you get the interface to set these settings: Start Servers Minimum Spare Servers Maximum Spare Servers Server Limit (max 20,000 Max Request workers Max Connections per Child Keep Alive Keep Alive timeout max Keep Alive Requests Timeout however, when I click on the Include editor and I look at the Pre Main Include, the Pre VirtualHost Include I get additional configuration information that does not match the main configuration if I select All Version from the dropdown, but I dont see anything if I select 2.4.54 from the dropdown. I am not sure why this is done but if they are different which one will it use for its configuration?

• 

  kodeslogic

  • October 11, 2022 04:44

  You'll have to adjust Server Limit & Max Request workers for your server to handle the connections. Gradually increase these values till the issue is resolved.

  0
• 

  quietFinn

  • October 11, 2022 10:13

  I am not sure why this is done but if they are different which one will it use for its configuration?

  
  It will use the settings you have in Pre VirtualHost Include.

  0
• 

  cPanelWilliam

  • October 11, 2022 19:03

  Hello! [QUOTE]I am trying to configure my site to be able to handle more traffic because it bogs down when I get about 150 concurrent users.
  It sounds like you could be encountering the MaxRequestWorkers limit, as the default value for this is 150. As @kodeslogic stated, you would likely need to increase both the MaxRequestWorkers and ServerLimit since MaxRequestWorkers cannot exceed the ServerLimit. We have more information about Apache tuning in the following support article:

  0
• 

  tagteam

  • October 12, 2022 23:51

  yes, I have updated my apache config to IfModule mpm_event_module> StartServers 10 ServerLimit 65 ThreadsPerChild 300 MaxRequestWorkers 15000 MinSpareThreads 150 MaxSpareThreads 250 MaxConnectionsPerChild 15000 hopefully this will make it run better when it gets busy However, I still have not found a way to verify which config it is using. I have checkec httpd -V and it says -D SERVER_CONFIG_FILE="conf/httpd.conf" but the Pre main and the pre Virtual are both added via include in that httpd.conf file.

  0
• 

  kodeslogic

  • October 13, 2022 00:58

  ServerLimit should be greater than or equal to MaxRequestWorkers value.

  0
• 

  tagteam

  • October 18, 2022 17:01

  I am using mod event, not prefork, so ServerLimit * ThreadLimit should determine the maximum value for MaxRequestWorkers if I am not mistaken.

  0

Please sign in to leave a comment.