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Re: [Xen-users] Increasing network performance on Windows DomUs

On May 4, 2009, at 11:33 PM, Fajar A. Nugraha wrote:

On Tue, May 5, 2009 at 8:13 AM, Adam Wead <awead@xxxxxxxxxxx> wrote:
Thanks, Fajar, and thanks to Javier for the posts to this thread.

I was able to install gplpv_chk_wlh_AMD64_0.10.0.55.msi on a new install of
Windows Server 2008 Enterprise, and the network speed did increase.
Previously, with the old drivers, iperf tests reported about 40 Mb/s, now
with the GplPv drivers it's about 140 Mb/s, and the NIC on the guest
actually says it's running at gigabit speed.  Not bad.

Ehm, you didn't say that you're running Windows 2008 x64. BE CAREFUL.

When not installed correctly, it can cause disk corruption.
Please check :
- how many disks you have now? If previously you have one (c:) but now
suddenly you have two (c: and d:) wit the same content, then most
likely your disk is corrupted already

No, I'm still at one disk.

- open device manager. Which NIC is active? Is it Realtek, or is it the Xen Net?

When I first installed the GplPV drivers, both the Realtek and the Xen Net Device driver were active, the latter appearing as Local Area Connection 2. I disabled the Realtek connection and activated the Xen driver. All seems well after a couple of reboots. I could go ahead and remove the Realtek driver completely, but maybe it's a good idea to keep it around in case the other goes haywire?

From my experience I had to do some specific setup (not simply click
"Next" and reboot) to get it working correctly.
If you had it working correctly, great! Just to be safe though, you
should check the above.

Thanks for the caveat. Other than the disabling/enabling of the drivers, it was pretty simple, but I will keep an eye on it.

The Shutdown Monitor also installed automagically, and now the guest
restarts gracefully...  Thank you, James Harper!

Now, if I can only figure out how to sign the driver so I don't have to go through that annoying process of disabling driver signature enforcement. I'd love to hear anyone's experiences with that. It seems all I need is the signtool on Windows, but I can't figure out how to actually get that.

Any suggestions are appreciated.

Again, from experience, testsigning doesn't work correctly with GPLPV.
Or rather, disk driver works but NIC driver doesn't. I suggest you use
Ready Driver Plus (try Google for it). Basically it automate some key
press to select "disable driver signing enforcement" on every boot.

Great.  Testsigning looks to be a pain anyway.  I'll give that a try.

Thanks again for the help.  It's very appreciated!



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