CPU and Device Shares in Libvirt

Continuing from last post, I’ve also been looking at applying CPU/disk shares and weighting to my various virtual machines to also help regulate load. This is in addition to the per-device IOPS limitations I talked about using virsh blkdeviotune.

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High Disk I/O Usage by a VM?

When I was trying to do some stuff on my home server this morning, I noticed that performance was absolutely awful. A quick examination of the server with top revealed that the server was getting wrecked by extremely high I/O wait.

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