A script to track what's eating all cpu ?

[SecondSight]

Hello ! :)

I'm having problems with php scripts (that is to say IPB) on my server : it's eating all cpu (so to say).

According to other webmasters/administrators the traffic I have (number of visitors, number of pages seen, etc.) shouldn't be a problem for my server which could normally accept much more.

So, after looking at the top, ps, vmstat, etc., they told me I should try to find which script in IPB is using a lot of CPU.

Do you know a script which allows to do this ?

Thank you ! :)

[Morrigan]

Well you could enable the execution time but what is to say that it is your site doing this? Have you contacted your host?

[SecondSight]

Yes, they've been and are still working on this... To them this is due to http traffic... For example :

root@server [/var/log/dcpumon/2010/Feb]# cat 23 | grep nobody
nobody=21.6630597551256=5.16091416325837=0=20.0=/usr/local/apache/bin/httpd -k restart -DSSL=18.0=/usr/local/apache/bin/httpd -k restart -DSSL=14.0=/usr/local/apache/bin/httpd -k restart -DSSL

Anyway, knowing what's not working well with IPB may tell me what's wrong with my server.

[MarcusInMd]

Can you post the output of top? What are your server specs? What is the traffic like on your forum?

[SecondSight]

Hello ! :)

My server is a 64 bit Bi Xeon Quad 8x 2.33+ with 16GB RAM and two 1TB HDD (RAID), with :
Apache 2.0.63
PHP 5.2.9
MySQL 5.0.89
EAccelerator
Sphinx as the search engine.
It's only running one IP Board with a 8 GB database and not more than 600 users online at this time of the year.

Tonight I'm only having 400 users online, everything was ok and there was a sudden high server load. Here are screen shots of TOPs I took as soon as I noticed there was a high server load beginning :
http://www.andrejorg...o/divers/12-03/
I restarted httpd to have everything back to normal.

MySQL slow query log is enabled but I found nothing corresponding to what happened.

What do you think of it ?

Thank you ! :)

[Tom Whiting]

you might want to suggest your host check out apache-top as this will probably help figure stuff out.

[Bono]

You should change your admins, this server should handle this kind of traffic with ease.

This kind of problems can be caused by EAccelerator, if you are running latest alpha/or beta available in cpanel.