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Re: [Xen-users] poor network performance on domU

from [Ralf Müller]

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To:	Arvid Ephraim Picciani <aep@xxxxxxxxxxxxxxx>
Subject:	Re: [Xen-users] poor network performance on domU
From:	Ralf Müller <ralf@xxxxxxxx>
Date:	Sat, 22 Mar 2008 19:39:57 +0100
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Am 22.03.2008 um 13:11 schrieb Arvid Ephraim Picciani:

On Saturday 22 March 2008 13:07:35 Teun Vink wrote:

 Performance towards the
domU is fine as well. Performance from the DomU's to the internet
however is dramatic: speeds start at 2-3MB/sec but quickly drop to
just a few KB/sec (!). Transfer of large files never end at all.

Then a helpfull soul on IRC gave me the hint to do
"ethtool -K eth0 tx off"  in the domUs. that helped dramaticly.


For me you are this helpful soul. I had this problem for half a
year now and no idea how to fix it. Network performance from a
domU to external systems as been as low as 4-8kBytes/sec. Now this
is fixed.

Thank you very much.

looks like a bug in xen.


Is this a known bug for Xen developers and are there any plans to
fix this?

Regards
Ralf

--
Van Roy's Law: -------------------------------------------------------
       An unbreakable toy is useful for breaking other toys.



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