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Virtual Network Performance Problems - Psched 14103

Source: microsoft.public.virtualserver
Sent: 02/27/2005
From: "Berhard Wagner" <(email address - cut out)>
Message:

Hi, after successfully transfering my physical machines into virtual,
everything seems ok, but:
When I do a lot of network traffic, like backing up a virtual machine on the
host, so there's near 100% network usage, the physical (!) machine begins to
slow down, graphical performance slows dramatically. This leads to an error
in the virtual machine W2K3 PSched Error 14103 QoS [Adapter 92369blablabla]
The netcard driver failed the query for OID_Gen_Link_Speed, and the network
connection is gone...

It's not dependent on the physical network card, because it happens with
Broadcom (did already the hacks), Realtek AND the MS Loopback Adapter. Apart
from this, when copying files from the host to another physical PC,
performance of the host also slows down. Further experiments show that when
shutting the virtual machines down, and then copying the files through the
physical machines, no loss of performance is recognized.

HW is a P4 3.0Ghz, so ist must be fast enough for this, Network Speed is
100Mb/s.

Any hints?

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Related Messages

Re: Virtual Network Performance Problems - Psched 14103

Sent: 03/01/2005
From: "Ben Armstrong [MSFT]" <(email address - cut out)>
Message:

Have you tried disabling the QoS service inside of the virtual machine?
--
Cheers,
Benjamin Armstrong
===============================
Virtual machine Program Manager

This posting is provided "AS IS" with no warranties, and confers no rights.
You assume all risk for your use.

Berhard Wagner wrote:

Show quoted text

> Hi, after successfully transfering my physical machines into virtual,
> everything seems ok, but:
> When I do a lot of network traffic, like backing up a virtual machine on the
> host, so there's near 100% network usage, the physical (!) machine begins to
> slow down, graphical performance slows dramatically. This leads to an error
> in the virtual machine W2K3 PSched Error 14103 QoS [Adapter 92369blablabla]
> The netcard driver failed the query for OID_Gen_Link_Speed, and the network
> connection is gone...
>
> It's not dependent on the physical network card, because it happens with
> Broadcom (did already the hacks), Realtek AND the MS Loopback Adapter. Apart
> from this, when copying files from the host to another physical PC,
> performance of the host also slows down. Further experiments show that when
> shutting the virtual machines down, and then copying the files through the
> physical machines, no loss of performance is recognized.
>
> HW is a P4 3.0Ghz, so ist must be fast enough for this, Network Speed is
> 100Mb/s.
>
> Any hints?
>
>

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