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Re: [Xen-users] Re: Xen pci device #0

To: <xieliwei@xxxxxxxxx>
Subject: Re: [Xen-users] Re: Xen pci device #0
From: "Nick Couchman" <Nick.Couchman@xxxxxxxxx>
Date: Fri, 01 Jul 2011 12:07:47 -0600
Cc: james.harper@xxxxxxxxxxxxxxxx, xen-users@xxxxxxxxxxxxxxxxxxx
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> Whoops, forgot that the system restore undid my boot.ini change. See
> attached for another log file with patchtpr specified.
> 
> Also, to give you a better idea of what I'm seeing, here's the FTP
> test result (this is over a 200/100Mb link to my ISP):
> 

Sorry, kind of late to this conversation, but a couple of things...
1) With regard to original question about the stray "Xen Pci Device 0",
I see this exact same item in my Device Manager, but it's never been the
source of any problems.
2) For network performance, can you tell me if you have Checksum
Offloading enabled on the network device in device manager?  Sorry,
James, to keep on about this one, but in every Windows VM on any host in
my environment I have to disable Checksum Offload and Large Send Offload
to get decent performance.  The difference is quite incredible - I get
sub-1Mb/s performance with them enabled, and anywhere from 300Mb/s and
up with it disabled.

-Nick



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