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All server web traffic lagging out when server load hits around 2.5 2.5 2.5

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4 comments

  • kodeslogic
    When this happens again, you will have to identify the process using high resources using a top utility/command using the root user.
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  • cPRex Jurassic Moderator
    What @kodeslogic said - the best way to get details on this will be to try and troubleshoot the issue while the load is high. It's nearly impossible to get reliable data after the issue has happened.
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  • maestroc
    I discovered the primary cause tonight as I caught the whole thing in the process of happening. One account is seeing a huge increase in traffic due to a very sensitive news article that had apparently gone viral. The thing that concerns me is that this spike in traffic to one account brought the whole server to its knees for several hours. Isn't apache/cpanel/etc. supposed to prevent high use by one account from bringing down everything else with it? I've never had this kind of traffic spike before so I'm unsure what I should have done differently or if something is somehow set incorrectly. I kept trying to kill all of the account's processes but they just came right back with more requests. I finally suspended the account just to let the server and the other accounts come back up.
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  • cPRex Jurassic Moderator
    @maestroc - cPanel itself doesn't have any controls to prevent that. If the server has the resources, they can be used by one account. What you're looking for is CloudLinux, which allows you to limit resources to individual domains. More details on that can be found here: Introduction
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