High CPU usage on my wordpress blog

[Zeokat]

I have a wordpress blog, i moved to a VPS (2cpu, 1,5Gb ram) but processes mysql and php have a high cpu usage. I?m using cPanel/WHM.
Anyone knows how to tune up my config to save some cpu?

Thanks.

Zeokat Reviewed by Zeokat on 5th Jun 2012. High CPU usage on my wordpress blog I have a wordpress blog, i moved to a VPS (2cpu, 1,5Gb ram) but processes mysql and php have a high cpu usage. I?m using cPanel/WHM. Anyone knows how to tune up my config to save some cpu? Thanks. Rating: 5

[shadow.prx]

What plug-ins have you got ?

Disable unneeded plug-ins

Install w3 total cache for caching and minify

[Zeokat]

Not question of my wordpress setup, i have same wordpress config at another VPS with less resources and cpu load was lower (average 0.60, now the average is 1.15) so something into the server is not properly optimized.

I?m using w3 total cache and cloudflare. The porblem is from server/cPanel side not from wordpress configuration.

[shadow.prx]

Is it a managed vps or unmanaged do you have ssh access if so login and just do

top

this shows live system processes in a nice table, memory information then you can see what is actually causing the high cpu usage and take it from their

[Zeokat]

Well shasow.prx, i?m already using top, thats why i noticed the high cpu load.
top - 19:52:02 up 19:46, 1 user, load average: 2.03, 1.95, 1.62

And processes that uses all cpu are: mysql and php as i said in my FIRST post.

My service is managed, but the people who manage them are .... well....

[torrfriend]

if possible disable all plugins and then reactivate one by one and check the cpu usage..

because some plugins(especiallly backup plugins may hang in cron)

[Zeokat]

Currently 115 users online:

top - 20:21:43 up 20:15, 1 user, load average: 0.72, 0.85, 0.99

Used mysqltunner perl script and followed instructions and deactivated plugin "postviews", and cpu load decreased. I go to activate plugin "postviews" again and will see what happens.

---------- Post added at 07:40 PM ---------- Previous post was at 06:32 PM ----------

After read here and there.... http://boomshadow.net/tech/php-handlers/

I enabled php handler FastCGI and seems that cpu load decreases a little (ram usage increase arround 60MB, affordable).

Load Averages: 0.86 0.71 0.81

After one hour:
Load Averages: 0.53 0.61 0.63

I think that now all is normal

[Apathetic]

You might also like to disable gzip if you're not conserving bandwidth.

[Zeokat]

You might also like to disable gzip if you're not conserving bandwidth.

You can be correct, perhaps Gzip uses many cpu of my site, but the page size is decreased 80%, too much sacrifice disable Gzip at the moment.

Another thing that should help to keep cpu load lower is disable wp-cron that executes constantly, is a better option add a cronjob. Found a well explained tutorial here: http://wpdailybits.com/blog/replace-...al-cron-job/74


Finally i know what increase my mysql cpu usage, was plugin post-ratings, i disabled it and cpu load lowered a lot.

Sadly my traffic increase more and now the cpu usage is mostly by PHP (fastCGI), i?m researching how to reduce the php cpu usage.... but not seems easy.

[Apathetic]

Try using a caching tool, like APC and Varnish.