Honestly, cloudlinux should be able to prevent this, unless the server is *seriously* overloaded. This seems unlikely since the OP said the problem only started a few weeks ago.
It seems more likely that CloudLinux is not properly configured, and there is at least one site using up too much resources.
Either way, I would suggest contacting the hosting provider and telling them exactly what you posted above. Explain that you noticed server load has been high for the last few weeks, and you need to see the problem fixed or moved to a different (not overloaded) server.
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Not necessarily caused by another cPanel account, though, in which case CloudLinux won't help at all. It could be anything from backups running to updates and so on.
I would suggest being patient and giving your host time to rectify the issue, and, if they are unable to leave, I'd suggest visiting the reseller hosting section here on WHT and finding another provider.
Have you tried contacting your host and telling them about your situation? They may be able to fix this issue they can reconfigure cloud Linux and have it run at a stronger rate. If they are unable to fix this problem and if your site still has high loads then you should look into transferring to a new and more better reliable server providers.
There can be many different factors and reasons why your server load is high.
Depending on how often the load goes up to 15 (and if it seems to be at the same time, same day of the week everytime it goes up), it could be backups or websites that are getting traffic spikes. Either way, if you've been there a while, and this problem just started, try letting them know how you feel, and more importantly how serious of a problem it is to you. Almost all issues can be resolved with some good communication between you and your host. It could be a simple fix such as changing the times that backups run, or moving an account that has out grown its plan to another server where there are more resources for it. Good luck!
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Its a fully managed so im hoping it is amlost as easy as a normal shared host
Sometimes it may not even if you are on a fully managed VPS. Are you familiar dealing with root WHM?
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