linux-kernel - Re: [Alacrityvm-devel] [GIT PULL] AlacrityVM guest drivers for 2.6.33

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Message-ID: <20091223182221.GA415@sequoia.sous-sol.org>
Date:	Wed, 23 Dec 2009 10:22:21 -0800
From:	Chris Wright <chrisw@...s-sol.org>
To:	"Peter W. Morreale" <pmorreale@...ell.com>
Cc:	Andi Kleen <andi@...stfloor.org>, Avi Kivity <avi@...hat.com>,
	Gregory Haskins <gregory.haskins@...il.com>,
	kvm@...r.kernel.org,
	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
	netdev@...r.kernel.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"alacrityvm-devel@...ts.sourceforge.net" 
	<alacrityvm-devel@...ts.sourceforge.net>,
	Anthony Liguori <anthony@...emonkey.ws>,
	Ingo Molnar <mingo@...e.hu>, torvalds@...ux-foundation.org,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [Alacrityvm-devel] [GIT PULL] AlacrityVM guest drivers for
	2.6.33

* Peter W. Morreale (pmorreale@...ell.com) wrote:
> On Wed, 2009-12-23 at 13:14 +0100, Andi Kleen wrote:
> > > http://www.redhat.com/f/pdf/summit/cwright_11_open_source_virt.pdf
> > >
> > > See slide 32.  This is without vhost-net.
> > 
> > Thanks. Do you also have latency numbers?
> > 
> > It seems like there's definitely still potential for improvement
> > with messages <4K. But for the large messages they indeed 
> > look rather good.
> > 
> > It's unclear what message size the Alacrity numbers used, but I presume
> > it was rather large.
> 
> No.  It was 1500.  Please see: 
> 
> http://developer.novell.com/wiki/index.php/AlacrityVM/Results

That's just MTU.  Not the message size.  We can infer the message size by
the bare metal results (reasonably large), but is helpful to record that.

thanks,
-chris
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