From: Avi Kivity <avi@redhat.com>
To: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "Fischer, Anna" <anna.fischer@hp.com>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>
Subject: Re: Network I/O performance
Date: Tue, 19 May 2009 07:53:52 +0300 [thread overview]
Message-ID: <4A123B60.9090901@redhat.com> (raw)
In-Reply-To: <20090519013027.GB8566@gondor.apana.org.au>
Herbert Xu wrote:
>> Yes, there's a known issue with UDP, where we don't report congestion
>> and the queues start dropping packets. There's a patch for tun queued
>> for the next merge window; you'll need a 2.6.31 host for that IIRC
>> (Herbert?)
>>
>
> It should be in 2.6.30 in fact. However, this is for outbound
> traffic only since inbound traffic shouldn't have this problem
> of the guest sending faster than the wire.
>
Is there a corresponding qemu change? Or is this a already handled by
the existing code?
--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
next prev parent reply other threads:[~2009-05-19 4:53 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-12 0:28 Network I/O performance Fischer, Anna
2009-05-13 7:23 ` Avi Kivity
2009-05-13 15:56 ` Fischer, Anna
2009-05-17 21:14 ` Avi Kivity
2009-05-19 1:30 ` Herbert Xu
2009-05-19 4:53 ` Avi Kivity [this message]
2009-05-19 7:18 ` tun/tap and Vlans (was: Re: Network I/O performance) Lukas Kolbe
2009-05-19 7:45 ` tun/tap and Vlans Avi Kivity
2009-05-19 19:46 ` Lukas Kolbe
2009-05-20 10:25 ` Fischer, Anna
2009-05-20 10:38 ` Avi Kivity
2009-05-19 21:22 ` Does KVM suffer from ACK-compression as you increase the number of VMs? Andrew de Andrade
2009-05-20 10:15 ` Network I/O performance Fischer, Anna
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