Hopefully someone can help me determine how to troubleshoot my server crashing.
I’m running wordpress multisite. I started using a load testing website to see how my site would perform. I tested with a minimal 15 users and the site bit the dust.
I need help determining where/what the culprit of the crash is. I’m running many wordpress plugins, of those I’m running W3 total cache which should be helping my site not crash.
I’ve looked at my Apache error logs, but they’re not very helpful. The main error that I notice when I run the load test is this: [warn] mod_fcgid: read data timeout in 31 seconds
[Sun Feb 27 01:08:34 2011] [error] [client 184.108.40.206] Premature end of script headers: index.php.
I’m on a Linode VPS with 512mb of RAM. If I look at the graphs in linode I can cleary see where the CPU (200%) and Disk IO (19000) spike.
Where should I start?