Strangely high IOwait from the KVM process

  • Hi. I recently upgraded a 2.1 to 2.3 and consequently enabled VirtIO drivers in a KVM virtualization.

    Now I have a server core completely busy in iowait, and the culprit seems to be the kvm process handling the pfSense instance. I logged into pfSense but top doesn't show any process taking CPU, and pfSense load is below 0.05.

    What could be causing this? Any suggestion on where I can check?


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