VBSEO its eating up my CPU, High Load Causing Blank Pages.

Ive been having this problem for a long time, today I decied to split my server in 2, one for the DB and the other for the php/html.

I tought this was going to solve the problem of getting blank pages everytime on my forum, but it didnt.

I hired an IT firm to evaluate the server and this is what they told me:

"PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
24634 sheriff 22 4 28696 17m 3716 R 53 0.4 0:00.47 php
24606 sheriff 29 4 31400 18m 3716 R 18 0.5 0:01.36 php
24647 sheriff 22 4 28552 18m 3640 R 18 0.5 0:00.33 php
6098 mysql 21 6 390m 165m 3432 S 16 4.2 1109:01 mysqld
24609 sheriff 29 4 32316 19m 3716 R 16 0.5 0:01.35 php
24627 sheriff 29 4 30984 18m 3716 R 16 0.5 0:01.35 php
24622 sheriff 26 4 28996 18m 3652 S 14 0.5 0:01.42 php
24639 sheriff 22 4 28688 17m 3720 R 14 0.4 0:00.42 php
24842 sheriff 21 4 22948 12m 3528 S 8 0.3 0:00.10 php
24633 sheriff 20 4 28116 16m 3716 R 6 0.4 0:00.22 php
24835 sheriff 19 4 28588 15m 3716 S 6 0.4 0:00.17 php
24850 sheriff 21 4 16912 6532 2728 R 4 0.2 0:00.02 php


What php script does that user run? vbseo.php just destroys your CPU. The load is at 20 right now which is the cause of the blank pages.

Look above at the CPU% column. The script was taking up 54% for a single process!! 18, 18, 16, 16, 14 ,14 , 8 , 6, 6, 4% for the others and there were more then I just pasted. Whatever you have the script doing is being called frequently and very inefficiently. Are you sure it is only a mod_rewrite it seems to be a lot more."




Somebody please help, users are emailing me all day complaning about this.

Thanks!!!

The best thing you could do is submit a support ticket on this ASAP.

http://www.vbseo.com/en/support/

It appears that your forums only have 165 total members with the max online at once being 28, so I don't see how that could be bringing a dual server setup to those CPU levels.

Originally Posted by Keith Cohen

It appears that your forums only have 165 total members with the max online at once being 28, so I don't see how that could be bringing a dual server setup to those CPU levels.

Its not that forum Keith, is the other one, got the URL? Because I dont want to make it public.

Thanks

I only see one vBSEO license associated with your username in our database, so please open a support ticket with the details.

Thanks

ticket posted

About Oleg recommendation on the support ticket, this is what the IT firm specialist told me right now:

"I am not sure it will help THAT much, does this php script need to be run from the webserver or can it be run statically?

Perhaps look at not using this plugin? We have had clients use it in the past and they too had to disable it because it took waaayy too much processing power. I am not sure how much it is doing but it really is a poorly designed piece of software to consume 50% of such a powerful servers processing power for a single search/query."

vBSEO is running very smoothly on many very large sites, and the code is highly optimized and efficient.

Originally Posted by Keith Cohen

vBSEO is running very smoothly on many very large sites, and the code is highly optimized and efficient.

I would love to know what apache configuration are they using.
As I told you before I even separated mysql and put it on another dedicated server.

My server is very very powerful, but vbseo seems to put it on its knees after 200 users come online.

Any help?

Replied to your support ticket.

I tried all your suggestions, nothing work.
Im still getting blank pages all the time and the load is very very high.

It takes some tweaking but you can get the load down a lot. I posted my server settings at vbulletin and they adviced me on a few changes that really did a lot to the load. Also are you running some sort of cache script? That also helps a lot to get the load down. I'm using eAccelerator. We have 300-400+ users online sometimes up to +1000 including guests on a opteron 270 dual core and loads are about 1-3. We plan to buy some extra memory though because now our swap memory is being used at busy times. It's now 2Gb and needs to be 4 Gb. Load will go down to under zero after that. Hope this helps

Originally Posted by dutchbb

It takes some tweaking but you can get the load down a lot. I posted my server settings at vbulletin and they adviced me on a few changes that really did a lot to the load. Also are you running some sort of cache script? That also helps a lot to get the load down. I'm using eAccelerator. We have 300-400+ users online sometimes up to +1000 including guests on a opteron 270 dual core and loads are about 1-3. We plan to buy some extra memory though because now our swap memory is being used at busy times. It's now 2Gb and needs to be 4 Gb. Load will go down to under zero after that. Hope this helps

thank you for your advice dutchbb, I installed eAccelerator and it helped just a little bit, not too much to solve the problem.

But what I did was, moved my re-write rules from the htacess to the httpd.conf and changed from Zend to Ioncube version.
That helped me A LOT!!

PS:Thanks Oleg!

eAcceleerator and Zend working fine on your forums ? I thought they were not compatible.

No problems here running Zend and eA.
@ George: good to hear.