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Re: [Xen-devel] Problems booting latest xen pv-ops linux kernel

  • To: Pasi Kärkkäinen <pasik@xxxxxx>
  • From: Fasiha Ashraf <feehapk@xxxxxxxxxxx>
  • Date: Fri, 20 Nov 2009 19:23:57 +0530 (IST)
  • Cc: "Fajar A." <fajar@xxxxxxxxx>, Xen Developers List <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • Delivery-date: Fri, 20 Nov 2009 05:54:24 -0800
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  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
comments in-line

That sounds like you have problems with some network offloading
settings.

Have you tried for example this in the domU:
ethtool -K eth0 tx off
After doing this throughput increases between external node<-> guest, it becomes 940Mb/s on 1G card in both directions. But my domU<->domU throughput just reaches 300Mb/s. It should be in Gbits/s since loop-back is used in this case. How can i improve it to Gb/s
Does that help? If it doesn't, try playing with the other offloading
settings.. you can check them with "ethtool -k eth0".
Yes it helps also other offloading parameters.

Do you have errors in the dom0 dmesg? No


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