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Community ▶ Questions ▶ High IO Traffic CPU during 2 hours exactly - How to trace?
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High IO Traffic CPU during 2 hours exactly - How to trace?

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Hi,

Just got a warning from linode that my IO was high. I use my server as a webserver (very low traffic).

I checked the grafic (see image below) and I don't really understand how to find what could have created strange 2-hours high traffic & CPU & IO.

I have checked the apache logs, the mail.log or auth.log but I don't find anything.

Can anybody explain me how to check and/or what to implement to be able to check such events?

Thank you

Alex

Using My Ubuntu 11.04 64bit Profile

Apache 2 MySQL PHP and ESMTP for the emails

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3 Replies

Try checking your website access logs?

Hi! I did it (Apache logs) and google analytics too but found nothing.

It will be difficult to figure out what it was. You could could all files for access times and try to see if certain files were modified/created/accessed at the time of the spike, or, for the future, use something like Munin.

I use CSF that also sends out notifications for high load with a ps output, so you could try that as well. Or, maybe this will work as well.

Good luck!

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