From: Avi Kivity <avi@redhat.com>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>,
dlaor@redhat.com, virtualization@lists.linux-foundation.org,
Chris Wright <chrisw@redhat.com>,
Mark McLoughlin <markmc@redhat.com>,
kvm@vger.kernel.org, Brian Stein <bstein@redhat.com>,
Herbert Xu <herbert.xu@redhat.com>, Dor Laor <dor@redhat.com>,
Yaron Haviv <yaronh@voltaire.com>,
Shahar Klein <shahark@voltaire.com>,
Anthony Liguori <aliguori@us.ibm.com>
Subject: Re: TODO list for qemu+KVM networking performance v2
Date: Wed, 10 Jun 2009 19:08:49 +0300 [thread overview]
Message-ID: <4A2FDA91.4070903@redhat.com> (raw)
In-Reply-To: <20090610155428.GI28601@redhat.com>
Michael S. Tsirkin wrote:
> On Wed, Jun 10, 2009 at 06:18:01PM +0300, Avi Kivity wrote:
>
>> Michael S. Tsirkin wrote:
>>
>>> But I don't understand how aio will make implementing it easier -
>>> or are you merely saying that it will make it worthwhile?
>>>
>>>
>> If you have aio, the the NIC and the guest proceed in parallel. If the
>> guest is faster (likely), then when it sends the next packet it will see
>> that interrupts are disabled and not notify again. Once aio complete we
>> can recheck the queue; if it's empty we reenable notifications. If
>> there's still stuff in it we submit it with notifications disabled.
>>
>
> So you are saying that with aio we won't need this optimization at all?
> I guess it's late in the day, and my mind is fuzzy...
>
No, I'm saying with aio the optimization becomes worthwhile. But I
joined late in the thread so we may be talking about different things.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2009-06-10 16:08 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-04 16:43 TODO list for qemu+KVM networking performance v2 Michael S. Tsirkin
2009-06-04 17:16 ` Gregory Haskins
2009-06-04 17:29 ` Michael S. Tsirkin
2009-06-04 17:50 ` Gregory Haskins
2009-06-04 17:50 ` Gregory Haskins
2009-06-04 18:10 ` Michael S. Tsirkin
2009-06-04 18:10 ` Michael S. Tsirkin
2009-06-04 17:29 ` Michael S. Tsirkin
2009-06-04 17:16 ` Gregory Haskins
2009-06-10 3:39 ` Rusty Russell
2009-06-10 6:26 ` Dor Laor
2009-06-10 14:39 ` Rusty Russell
2009-06-10 14:53 ` Michael S. Tsirkin
2009-06-10 15:18 ` Avi Kivity
2009-06-10 15:18 ` Avi Kivity
2009-06-10 15:54 ` Michael S. Tsirkin
2009-06-10 16:08 ` Avi Kivity
2009-06-10 16:08 ` Avi Kivity [this message]
2009-06-10 16:28 ` Michael S. Tsirkin
2009-06-10 16:28 ` Michael S. Tsirkin
2009-06-10 15:54 ` Michael S. Tsirkin
2009-06-10 14:53 ` Michael S. Tsirkin
2009-06-10 6:26 ` Dor Laor
2009-06-10 3:39 ` Rusty Russell
-- strict thread matches above, loose matches on Subject: below --
2009-06-04 16:43 Michael S. Tsirkin
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