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XF 1.4 CPU Usage and VM usage shot up to 100%

Discussion in 'Troubleshooting and Problems' started by New Joe, Oct 11, 2014.

  1. New Joe

    New Joe Active Member

    So after doing the change from vB to Xenforo today this afternoon things went a bit strange.
    Both my CPU Usage and VM usage shot up to 100% on my shared hosting.
    Which brought my site to a standstill..

    I was ready to turn everything back to vB but I decided to try to fix out what is going on.

    I have been running 2 vB forums on my shared hosting with URL jet for 5 years now, and never even got any where near to 50%

    So what went wrong?
    I had 6 members online, 10 guests and 6 robots and that was it.

    The hosting had this to say:

    Funny how this never happened using vB

    Anyone got any good ideas why this would happen?
  2. New Joe

    New Joe Active Member

  3. Andy.N

    Andy.N Well-Known Member

    Disable all addons and turn on each, one at a time. Then monitor it to identify which addon caused the problem.
  4. Jake Bunce

    Jake Bunce XenForo Moderator Staff Member

    That is a virtual server, yes?

    According to those stats you have 1GB of physical memory and 1GB of virtual memory allocated. Your physical memory was maxed for a time.

    The CPU allocation is less clear, but the limit is being hit.

    There is only one process represented in those stats. It may be helpful to know what that process is. It's probably PHP or MySQL though.

    If memory serves, yes. I seem to remember reports of resource problems with that addon.
  5. New Joe

    New Joe Active Member

    It's not no
    Just the standard shared hosting with URL Jet.
  6. New Joe

    New Joe Active Member

    So guess it's hard to work out why this happened after switching to Xenforo from vB?
  7. RobParker

    RobParker Well-Known Member

    Disable all addons and see if it's still bad.

    Generally XF is MASSIVELY more efficient than VB but some addons can take a lot of resources.
  8. Walter

    Walter Well-Known Member

    Ask your host if they have proper caching for Innodb tables.
  9. RoldanLT

    RoldanLT Well-Known Member

    Using DPSpy addon for months without any problem or being a resource hog.

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