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RE: [Xen-users] Slow windows network with gplpv driver.

To: "John McMonagle" <johnm@xxxxxxxxxxx>, <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-users] Slow windows network with gplpv driver.
From: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
Date: Wed, 25 Aug 2010 09:38:03 +1000
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Thread-topic: [Xen-users] Slow windows network with gplpv driver.
> Have 4 xen servers with windows domains.
> 2 work OK and 2 have xp domains with slow network performance.
> Doing most of the testing on a xen system that currently is not in
> Running xen 4.0 with 2.6.32 kernel from lenny backports.
> Have xp service pack3 freshly installed with no updates.
> Installed gplpv gplpv_XP_0.11.0.213.msi
> hdtack gives 60mb/sec which is good
> iperf gives ~15Mbits/sec
> Without gplpv is about hte same.
> A linux pv domu gives 686Mbits/sec
> Shows it as using Xen Net Device Driver.
> Things that I have tried that did not help:
> Disable Checksum Offload.
> Disable Large Send Offload.
> Disable Scatter/Gather.
> Adding /patchptr  to boot.ini
> Any Ideas?

What XP service pack are you running? Try turning off the firewall,
including disabling the firewall service completely (eg services.msc and
disable the actual service, don't just turn off the firewall)


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