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Re: [Xen-users] 3.0.0 and gplpv

To: Pasi Kärkkäinen <pasik@xxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] 3.0.0 and gplpv
From: jim burns <jim_burn@xxxxxxxxxxxxx>
Date: Mon, 25 Jul 2011 16:24:10 -0400
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On Mon July 25 2011 3:57:23 PM Pasi wrote:
> On Mon, Jul 25, 2011 at 03:48:18PM -0400, jim burns wrote:
> > Hi, Pasi! Long time no 'see'.
> indeed! If you're going to XenSummit next week we can see for real! :)

I wasn't even paying attention this year to where it's being held. I got 
discouraged in previous years at it being held in european locations, which is 
well beyond  my means. :)

> > I'm not even close to being on 'current' hardware. On 2.6.32, I get
> > about  120Mb/s recv rate to the domu, which is fine with me. We had this
> > discussion a couple of years ago, when I was subscribed. Same hardware
> > as then.
> Just to verify.. you mean 120 Mbit/sec? (which is pretty slow..)

 Yep! That's what you get with an Intel Core2 T5600  @ 1.83GHz. We talked at 
length about my performance when I was providing benchmarks for each early 
version of James' gplpv drivers, and how performance was definitely software 
limited. I'm only interested in relative differences between one platfom and 
another, changing one thing at a time. In this case, gplpv, and my winxp 
config, are the same, but the dom0 is different. Going from 120Mb/s (2.6.32) 
to 20-40 Mb/s (3.0.0), and then hanging is a definite *relative* difference! 
I'm not even concerned about the speed slowdown - just the hang. Hence, I'll 
provide James with the tcpdump when I get more time in a few days.

Talk to you later.

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