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Using Plesk on CentOS

Posted: Thu Jan 15, 2009 1:00 pm
by intellivision
I think CentOS is a flavor of Linux, apologies/please move this if it's not.

Last 1 minute 3.12
Last 5 minutes 2.61
Last 15 minutes 2.01

My VPS is getting hammered a few times a day. Sites will be unresponsive for about 5 minutes at a time. There's an example of the load. The rest of the day the server will happily run at under 1.00.

Memory and drive space are both at 55% used according to Plesk's system statistics page.

Question: how can I find out what's in need of attention? Is it MySQL? Apache? Is it getting DOS attacked? Is there a module I can install that says what's eating performance?