GPL PV drivers for Windows 0.9.11-pre12

GPL PV drivers for Windows 0.9.11-pre12

[James Harper]

I've just uploaded 0.9.11-pre12 of the GPL PV drivers for Windows.

Since -pre10 (and -pre11) I've fixed a heap of crashes that were
plaguing xennet under load, and also rewritten the interrupt/event
distribution logic to improve performance.

Under windows 2003 I can now get network speeds of 1-2Gbit/second TX and
600Gbit/second RX, which is considerably better than I was getting
before.

Please download it and give it a go.
http://www.meadowcourt.org/downloads

James

Re: GPL PV drivers for Windows 0.9.11-pre12

[Pasi Kärkkäinen]

On Wed, Aug 20, 2008 at 09:41:37PM +1000, James Harper wrote:
> I've just uploaded 0.9.11-pre12 of the GPL PV drivers for Windows.
> 
> Since -pre10 (and -pre11) I've fixed a heap of crashes that were
> plaguing xennet under load, and also rewritten the interrupt/event
> distribution logic to improve performance.
> 
> Under windows 2003 I can now get network speeds of 1-2Gbit/second TX and
> 600Gbit/second RX, which is considerably better than I was getting
> before.
> 

600 Gbit/sec is pretty damn fast ;) 

But yeah.. hopefully people can run some iometer benchmarks again for this
driver version! Would be nice know how it behaves on other peoples boxes.

-- Pasi

RE: [Xen-devel] GPL PV drivers for Windows 0.9.11-pre12

[James Harper]

> > Under windows 2003 I can now get network speeds of 1-2Gbit/second TX and
> > 600Gbit/second RX, which is considerably better than I was getting
> > before.
> >
> 
> 600 Gbit/sec is pretty damn fast ;)

Oops. Yes, my units were a bit wrong there. 600Mbit/sec :)

> But yeah.. hopefully people can run some iometer benchmarks again for this
> driver version! Would be nice know how it behaves on other peoples boxes.

I just ran some tests under XP and they were pitiful, although the tests weren't run on the same box. Something like 12Mbit/second TX and 50Mbit/second RX. XP doesn't seem to do large send offloads but that doesn't explain enough of the difference...

James

Re: RE: [Xen-devel] GPL PV drivers for Windows 0.9.11-pre12

[Eduardo Silvestre]

howdy,

this drivers are compatible with xenenterprise?

Regards,
---
Eduardo Silvestre
nfsi telecom, lda.

eduardo.silvestre@nfsi.pt
Tel. (+351) 21 949 2300 - Fax (+351) 21 949 2301
http://www.nfsi.pt/

----- Original Message -----
From: "James Harper" <james.harper@bendigoit.com.au>
To: "Pasi Kärkkäinen" <pasik@iki.fi>
Cc: xen-devel@lists.xensource.com, xen-users@lists.xensource.com
Sent: Wednesday, 20 August, 2008 1:03:48 PM GMT +00:00 GMT Britain, Ireland, Portugal
Subject: [Xen-users] RE: [Xen-devel] GPL PV drivers for Windows 0.9.11-pre12

> > Under windows 2003 I can now get network speeds of 1-2Gbit/second TX and
> > 600Gbit/second RX, which is considerably better than I was getting
> > before.
> >
> 
> 600 Gbit/sec is pretty damn fast ;)

Oops. Yes, my units were a bit wrong there. 600Mbit/sec :)

> But yeah.. hopefully people can run some iometer benchmarks again for this
> driver version! Would be nice know how it behaves on other peoples boxes.

I just ran some tests under XP and they were pitiful, although the tests weren't run on the same box. Something like 12Mbit/second TX and 50Mbit/second RX. XP doesn't seem to do large send offloads but that doesn't explain enough of the difference...

James

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RE: [Xen-users] RE: GPL PV drivers for Windows 0.9.11-pre12

[James Harper]

> howdy,
> 
> this drivers are compatible with xenenterprise?
> 

Probably not. Xen Enterprise has it's own PV drivers I believe.

If someone has access to both I'd like to see some performance comparisons :)

James

RE: [Xen-devel] GPL PV drivers for Windows 0.9.11-pre12

[James Harper]

> 
> I just ran some tests under XP and they were pitiful, although the tests
> weren't run on the same box. Something like 12Mbit/second TX and
> 50Mbit/second RX. XP doesn't seem to do large send offloads but that
> doesn't explain enough of the difference...
> 

A bit google-ing suggested stopping the 'Windows Firewall/Internet Connection Sharing (ICS)' service, which gets windows using the 'large send offload' feature and puts the TX up to around 50Mbit/second, which is a bit of an improvement.

With just the qemu devices on that server I get around 28Mbit/second TX and about 25Mbit/second RX.

James 

Re: GPL PV drivers for Windows 0.9.11-pre12

[Joost van den Broek]

James Harper schreef:
> I've just uploaded 0.9.11-pre12 of the GPL PV drivers for Windows.
>
> Since -pre10 (and -pre11) I've fixed a heap of crashes that were
> plaguing xennet under load, and also rewritten the interrupt/event
> distribution logic to improve performance.
>
> Under windows 2003 I can now get network speeds of 1-2Gbit/second TX and
> 600Gbit/second RX, which is considerably better than I was getting
> before.
>
> Please download it and give it a go.
> http://www.meadowcourt.org/downloads
>
> James
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
>   
While these numbers seem to be true for the RX/TX tests between domU <-> 
dom0, they don't apply to the domU <-> other physical node on lan. The 
RX is fine, on my 100mbit lan I get about 94 / 95mbit. But the TX is 
very poor: only 18-20mbit. This has been since all versions I've tested 
before, but of course hoped this one would make the difference. I've 
compared the results with a Linux domU PV, which does perform as 
expected (94-95mbit for both RX/TX).

Joost

RE: GPL PV drivers for Windows 0.9.11-pre12

[James Harper]

> While these numbers seem to be true for the RX/TX tests between domU
<->
> dom0, they don't apply to the domU <-> other physical node on lan. The
> RX is fine, on my 100mbit lan I get about 94 / 95mbit. But the TX is
> very poor: only 18-20mbit. This has been since all versions I've
tested
> before, but of course hoped this one would make the difference. I've
> compared the results with a Linux domU PV, which does perform as
> expected (94-95mbit for both RX/TX).
> 

I've just done some testing myself over a 1GB network... here are the
results.

Dom0 = Xen 3.2.1 Dom0 with a Broadcom gigabit network adapter (not the
same machine as my previous Dom0<->DomU testing was done on - this
system is not as highly spec'd).
DomU = Windows DomU running windows 2003 x32 + 0.9.11-pre13 of the GPLPV
drivers
Phys = Windows 2003 physical host with a Broadcom gigabit network
adapter
A Linksys managed gigabit switch separates Dom0 and Phys.

Dom0->Phys = 900mbit/second
Dom0->DomU = 975mbit/second
Phys->Dom0 = 850mbit/second
Phys->DomU = 700mbit/second
DomU->Dom0 = 1700mbit/second
DomU->Phys = 800mbit/second

Additionally, at the time of testing the nightly backup was occurring
which would have been moving data from Phys to Dom0. A bacula file
daemon and Exchange agent runs on Phys and the bacula director and
storage daemons run on Dom0.

So I guess we need to find out what is going on with your setup... what
network adapter are you using in Dom0 and does it support large send and
checksum offload? Or maybe something has changed in -pre13? I doubt it
though.

Thanks

James