netdev - Re: Network performance with small packets

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Message-ID: <1299637278.13202.61.camel@localhost.localdomain>
Date:	Tue, 08 Mar 2011 20:21:18 -0600
From:	Andrew Theurer <habanero@...ux.vnet.ibm.com>
To:	Shirley Ma <mashirle@...ibm.com>
Cc:	Rusty Russell <rusty@...tcorp.com.au>,
	"Michael S. Tsirkin" <mst@...hat.com>,
	Krishna Kumar2 <krkumar2@...ibm.com>,
	David Miller <davem@...emloft.net>, kvm@...r.kernel.org,
	netdev@...r.kernel.org, steved@...ibm.com,
	Tom Lendacky <tahm@...ux.vnet.ibm.com>
Subject: Re: Network performance with small packets

On Tue, 2011-03-08 at 13:57 -0800, Shirley Ma wrote:
> On Wed, 2011-02-09 at 11:07 +1030, Rusty Russell wrote:
> > I've finally read this thread... I think we need to get more serious
> > with our stats gathering to diagnose these kind of performance issues.
> > 
> > This is a start; it should tell us what is actually happening to the
> > virtio ring(s) without significant performance impact... 
> 
> Should we also add similar stat on vhost vq as well for monitoring
> vhost_signal & vhost_notify?

Tom L has started using Rusty's patches and found some interesting
results, sent yesterday:
http://marc.info/?l=kvm&m=129953710930124&w=2


-Andrew
> 
> Shirley
> 
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