From: Anthony Liguori <anthony@codemonkey.ws>
To: Avi Kivity <avi@qumranet.com>
Cc: kvm-devel@lists.sourceforge.net,
Laurent Vivier <Laurent.Vivier@bull.net>
Subject: Re: [PATCH 0/2] Batch writes to MMIO
Date: Wed, 23 Apr 2008 10:47:24 -0500 [thread overview]
Message-ID: <480F5A0C.1040503@codemonkey.ws> (raw)
In-Reply-To: <480F51F4.5000202@qumranet.com>
Avi Kivity wrote:
> Anthony Liguori wrote:
>>
>> The ne2k is pretty mmio heavy. You should be able to observe a boost
>> with something like iperf (guest=>host) I would think if this is a
>> real savings.
>>
>
> If we're just improving ne2k, the complexity isn't worth it. We have
> two better nics which are widely supported in guests.
Sure, but the ne2k should be pretty close to an optimal synthetic
benchmark for batching. If we don't see a big improvement with it,
we're probably not going to see a big improvement with it for anything.
As you point out though, the converse isn't necessarily true.
Regards,
Anthony Liguori
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next prev parent reply other threads:[~2008-04-23 15:47 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-23 13:07 [PATCH 0/2] Batch writes to MMIO Laurent Vivier
2008-04-23 13:07 ` [PATCH 1/2] kvm: " Laurent Vivier
2008-04-23 13:07 ` [PATCH 2/2] kvm-userspace: " Laurent Vivier
2008-04-23 14:31 ` [PATCH 1/2] kvm: " Avi Kivity
2008-04-23 14:59 ` Laurent Vivier
2008-04-23 15:04 ` Avi Kivity
2008-04-23 16:53 ` Anthony Liguori
2008-04-23 14:05 ` [PATCH 0/2] " Avi Kivity
2008-04-23 14:22 ` Laurent Vivier
2008-04-23 14:40 ` Avi Kivity
2008-04-23 15:10 ` Anthony Liguori
2008-04-23 15:12 ` Avi Kivity
2008-04-23 15:47 ` Anthony Liguori [this message]
2008-04-23 17:13 ` Avi Kivity
2008-04-23 16:24 ` Laurent Vivier
2008-04-23 16:25 ` Avi Kivity
2008-04-23 16:41 ` Laurent Vivier
2008-04-23 16:48 ` Anthony Liguori
2008-04-23 16:51 ` Avi Kivity
2008-04-23 18:54 ` Laurent Vivier
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