Re: [ANNOUNCE] kvm-guest-drivers-windows-2

Tomasz Chmielewski
2008-05-14T21:09:48Z

Anthony Liguori schrieb:

(...)

>>> So, a PV network driver can do about 700Mb/s, and an emulated NIC can
>>> do about 600 Mb/s, Windows guest to host?
>>>
>>> That would be about 20% improvement?
>>>
>
> FWIW, virtio-net is much better with my patches applied. The difference
> between the e1000 and virtio-net is that e1000 consumes almost twice as
> much CPU as virtio-net so in my testing, the performance improvement
> with virtio-net is about 2x. We were loosing about 20-30% throughput
> because of the delays in handling incoming packets.

Do you by chance have any recent numbers on disk performance (i.e., Windows
guest vs Linux host)?

--
Tomasz Chmielewski