Question How to identify sites causing high load?

[martin.g]

Server operating system version

CentOS Linux 7.9.2009 (Core)

Plesk version and microupdate number

Plesk Obsidian Version 18.0.52 Update #3

Hi,

we have a plesk instance with about 80 or 100 websites on it. Although high cpu usage websites are fast responsive, server is not "overloaded". Today I upgraded from 6 to 8 cores and could also put more cores into it. But it would be nice to know which website causes how much load or cpu usage. Thinking about introducing cgroups but I would like to have some stats before.


Cheers
Martin

 

[Maarten.]

There are a couple of ways to identify the issues:

- Use the glances command (available in the Epel repo) and sort on CPU
- Identify which bots are accessing the sites and try to block them:

# grep -i  bot /var/www/vhosts/*/logs/proxy_access_ssl_log | grep -vE 'bingbot|Googlebot|applebot'

- Monitor the website logs for a while and see which one might be causing the issue:

# tail -f /var/www/vhosts/system/*/logs/proxy_access_ssl_log
# tail -f /var/www/vhosts/system/*/logs/proxy_error_log
# tail -f /var/www/vhosts/*/logs/error_log

 

[tkalfaoglu]

Try this:

Instruction - How to find the busiest web site

To find the busiest web site, I figured the size of the access_log files should provide a clue, so I wrote something in OORexx. (you need to install oorexx and oorexx-devel for this, like yum install oorexx oorexx-devel): #!/bin/rexx "rxqueue...

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