KVM VirtIO paravirtualized drivers: why they matter

Written by Gionatan Danti on . Posted in Virtualization

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Windows 2012 R2 x64 guest

Let see if Windows guest has some surprise for us. Disk benchmark first:

Windows VirtIO disk driver

This time, the fully virtualized IDE driver is much behind the para-virtualized driver. In other word: always install the paravirtualized driver when dealing with Windows guests.

Network, please:

Windows VirtIO net driver

The paravirtualized driver continues to be much better then the fully virtualized NICs.

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