RE: [Xen-users] Networking with xen

["Quezada, Pedro" <PedroQ@xxxxxxxxxx>]

 

 

I doubt that performance will improve ..until there is a NIC specifically made for virtual switches..

or a sub network piece of equipment that networking part handled in hardware

everything is handled in software in these instances ...higher throughput will tax the server...

 

 

---

From: Grant McWilliams [mailto:grantmasterflash@xxxxxxxxx]
Sent: Wednesday, October 15, 2008 4:25 PM
To: Quezada, Pedro
Cc: Luke S Crawford; xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] Networking with xen

On Wed, Oct 15, 2008 at 12:13 PM, Quezada, Pedro <PedroQ@xxxxxxxxxx> wrote:

hey I found this

 

http://www.vmware.com/pdf/hypervisor_performance.pdf

And since it's from vmware it obviously not biased... Notice that they didn't test Commercial Xen against the very expensive ESX but the open source one. VMware is the only one that can legally release performance figures of their product. Try to figure out why that is. I'm not knocking ESX because it's probably Xen's only competition but VMWare doesn't want anyone else to release numbers because someone might actually test an area that Xen comes out on top.

They show Xen as only having 3-6% of the speed of a native implementation on netperf when I'm seeing 10x that (and I'm still complaining). Also they only tested the Windows HVM drivers which are nothing more the QEMU emultated hardware. Again had they compared commercial software to commercial software things would have been different.

It's been known for quite a while that Xen has IO problems. I'm not sure how much of this has been fixed in 3.3 as apposed to 3.03.
http://media.brianmadden.com/briforumplayer/bfplayerdynamic.asp?id=296&sparky=1



Grant McWilliams

 

_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users