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Windows server vm on KVM host settings/tweaks

by admin on February 13th, 2015

1. setĀ elevator=deadline in grub kernel options.

or at runtime:

setting “deadline” as the I/O scheduler for your host’s disks before starting KVM:

 for f in /sys/block/sd*/queue/scheduler; do echo "deadline" > $f; done


cat /sys/block/sd*/queue/scheduler 
to view current scheduler

2.use raw LVs whenever possible. Qcow2 gives overhead. Files on a FS also have overhead, virtio drivers cache none.

3.make sure the virtio drivers are up to date, especially the windows ones.

4. use e1000 network drivers foe vm in place of default r8169 (which can hang)

5…to be continued…


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