From: Peter Kieser <peter@kieser.ca>
To: JR <botemout@gmail.com>, kvm@vger.kernel.org
Subject: Re: Poor performance with virtio network driver on windows 2008 R2 on KVM
Date: Thu, 15 May 2014 10:27:31 -0700 [thread overview]
Message-ID: <5374F903.4080103@kieser.ca> (raw)
In-Reply-To: <53738DB5.2050006@gmail.com>
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On 2014-05-14 8:37 AM, JR wrote:
> Greetings all,
>
> Though I don't believe that this is KVM problem per se, I'm seeing very
> poor network performance when using windows 2008R2 KVM instances with
> the virtio driver when on a 10G network. iperf results show linux VMs
> getting close to wire speeds, while windows only does about 1.3Gb/sec.
>
> I've tried a number of tcp settings (chimney, etc...) as recommended by
> some google searches but nothing has helped.
>
> Does anyone have any advice?
>
> Thanks much,
> JR
>
>
I ran into similar issues with the Redhat virtio drivers, and the guest
would freeze with high transfer. I switched to the emulated e1000 NIC
and haven't had any problems since.
-Peter
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next prev parent reply other threads:[~2014-05-15 17:35 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-14 15:37 Poor performance with virtio network driver on windows 2008 R2 on KVM JR
2014-05-15 4:49 ` Venkateswara Rao Nandigam
2014-05-15 17:41 ` Venkateswara Rao Nandigam
2014-05-15 18:03 ` JR
2014-05-15 18:07 ` Venkateswara Rao Nandigam
2014-05-15 17:59 ` JR
2014-05-15 17:27 ` Peter Kieser [this message]
2014-05-15 18:01 ` JR
2014-06-30 3:00 ` Peter Kieser
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