Looping

[vBET]

Killing the process every 4 minutes is not best solution. It is some solution - your server is working. But you do not know what you are killing. So your user from time to time can see that your forum is not available if actually his request was killed (of course it will be available immediately just after sending request again).
As I wrote all requests to forum go through vbenterprisetranslator_seo.php (you have set it in .htaccess). There goes requests for seeing forums, threads, albums - there goes requests for anything. Even for adding new content (you can loose new post if you kill such request before vBulletin write it to database).
So even when it solves your main server issue it is not really a medicine, just painkiller. The issue really exists. So we strongly recommend to investigate the issue. We gave you first direction. If this will appear wrong one we will support you with solving this. Still just like doctors - we first need to confirm/eliminate most potential cause. This is not diagnose - this is just medical examination. An X-ray which will allow us to solve the issue or tell us to look more. Hope that any fan of Dr House will understand what I mean

[Taurus]

lol, thank you for that medical explanation. The only issues now by switching off one by one scheduled task, is that when do I actually start doing it? Because it seems that the CPU usage grows very slowly over like 2 days. It is not that it shoots up suddenly. Then it would be easier to determine what scheduled task it is.

[vBET]

OK so - I was mislead by your description about killing processes every 4 minutes... At this moment I'm little confused. Can you please explain why are you killing processes every 4 minutes, when issue appears every 2 days (by the way - this would point even more to some scheduled task as guilty one).

Please give me exact description of the situation. Also – is it really truth that CPU consumption grows slowly, or it is on similar level for long time and then goes up drastically. Please give detailed information. By giving us misleading information you make harder to help you.

Still please do the test. If it takes 2 days to appear the issue, then please just turn off all scheduled tasks. Restart your server and wait. If after 3 days nothing bad happens - it means that one of scheduled tasks is guilty. If still happens something else is the cause. So you will turn on all tasks again and let us know that ti is something else. Or you will turn on one scheduled task every 3 days if it is some scheduled task issue. In such case your server will be stable until you turn on the guilty one and you will know which one it is (rest tasks can be turned on then) - please give us your feedback.

If it is not scheduled task issue you will know it in most 3 days. If it is - you will know which one is guilty in more time - in such case please start turning on tasks from vBET tasks to eliminate or confirm that it is vBET issue.