[Resolved] Very High Server Load

[cool_recep]

Hi,

I don't know how it started at all but for some days, we are having severe performance problems on our server.

MySQL CPU usage is above 150% and page responsiveness is too low.



I have bought an hourly support form you and we have found a Wordpress Plugin that was using a lot of resources but this did not fix the problem completely.

I have now CloudFlare DDoS protection enabled.

We have Wordpress and Xenforo on the server. Both up to date.

PHP 5.6.12
MySQL 5.6.23 (This version might be buggy?)
LSWS 5.0.5

I don't think we are under attack. What is the problem ? Could you please help.

Regars.

Solution:

https://wordpress.org/support/topic/high-cpu-load-after-update-to-v43?replies=57

 

[NiteWave]

have you installed xcache or zend opcache as discussed in ticket ?

I can take a further look into your server within 12 hours.

while you can collect more info.

 

[cool_recep]

Thank you for your valued support. We have finally found the real problem behind all this (at least so far). Wordpress 4.3 seems to be the issue. This post solved the issue:

https://wordpress.org/support/topic/high-cpu-load-after-update-to-v43?replies=57#post-7330770

And yes, host installed xcache.

You can see the speed for yourself:

https://www.technopat.net/

 

[NiteWave]

Thanks for the upate. so 4.3.1 will fix it --- https://core.trac.wordpress.org/ticket/33423