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RE: [Xen-users] Problems with GPLPV network latency

To: <james.harper@xxxxxxxxxxxxxxxx>, <xen-users@xxxxxxxxxxxxxxxxxxx>, <itobin@xxxxxxxxxxxxx>
Subject: RE: [Xen-users] Problems with GPLPV network latency
From: "Nick Couchman" <Nick.Couchman@xxxxxxxxx>
Date: Wed, 09 Jun 2010 06:34:01 -0600
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James,
What config options adjust the timer in Xen?

-Nick

>>> "James Harper"  06/08/10 7:30 PM >>>
> 
> Ian,
> I see some of the same behavior - pings from my Windows-based domUs
with GPL
> PV drivers have seemingly random latency times from < 1 ms to more
than 8000
> ms.  The funny thing is that I *know* this isn't the actual latency,
since I
> would notice a ping taking 8 seconds to get back - it happens very,
very
> rapidly.  There must be something in the GPL PV network driver code
that is
> supposed to (help) compute this that is malfunctioning.
> 

I think you can mitigate this by fiddling with the timer options in your
config file.

James



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