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From: Mark McLoughlin <markmc@redhat.com>
To: Avi Kivity <avi@redhat.com>
Cc: Antoine Martin <antoine@nagafix.co.uk>,
	Antoine Martin <antoine@devloop.org.uk>,
	"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
	Rusty Russell <rusty@rustcorp.com.au>
Subject: Re: virtio net regression
Date: Mon, 20 Apr 2009 12:12:02 +0100	[thread overview]
Message-ID: <1240225922.23407.48.camel@blaa> (raw)
In-Reply-To: <49EB0F7B.3040802@redhat.com>

On Sun, 2009-04-19 at 14:48 +0300, Avi Kivity wrote:
> Antoine Martin wrote:
> > -----BEGIN PGP SIGNED MESSAGE-----
> > Hash: SHA512
> >
> > Wireshark was showing a huge amount of invalid packets (wrong checksum)
> > - - that was the cause of the slowdown.
> > Simply rebooting the host into 2.6.28.9 fixed *everything*, regardless
> > of whether the guests use virtio or ne2k_pci/etc.
> > The guests are still running 2.6.29.1, but I am not likely to try that
> > release again on the host anytime soon! Ouch!
> >   
> 
> 
> Strange, no significant tun changes between .28 and .29.

Sounds to me like it's this:

  http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=2f181855a0

davem said he was queueing up for stable, but it's not in yet:

  http://kerneltrap.org/mailarchive/linux-netdev/2009/3/30/5337934

I'll check that it's in the queue.

Cheers,
Mark.


  reply	other threads:[~2009-04-20 11:12 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-04-15 20:04 virtio net regression Antoine Martin
2009-04-15 23:38 ` Antoine Martin
2009-04-19 11:48   ` Avi Kivity
2009-04-20 11:12     ` Mark McLoughlin [this message]
2009-04-20 15:09       ` Antoine Martin
     [not found]       ` <49EC8F1D.7000109@nagafix.co.uk>
2009-04-28 18:57         ` Antoine Martin
2009-05-09 13:19           ` Antoine Martin
2009-05-13 12:58             ` Antoine Martin
2009-05-14  3:52               ` David Miller
2009-05-18  9:39             ` Avi Kivity
2009-05-19 10:16               ` Antoine Martin
2009-05-19 10:21                 ` Avi Kivity
2009-05-19 10:47                   ` Antoine Martin
2009-05-19 13:03                     ` Avi Kivity

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