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How do I troubleshoot VPS lag, high CPU, or high IO?

VPS lag is not always caused by a host node fault. It may also be caused by processes inside the system consuming too many resources.

Checks to perform first

After logging in to the server, run:

top
htop
iotop

Check which processes are using the most CPU, memory, or IO.

If SSH is unavailable

You can reboot from the control panel first, then log in as soon as possible and check:

  • Recently started services.
  • System logs.
  • Processes using the most resources.
  • Whether the disk is full.

When submitting a ticket, please provide screenshots of resource usage and the time when the issue occurred.