[Xen-users] AMD SR5690/SP5100 + 2.6.31 + pv_ops = bad domU performances

[Christian Zoffoli <czoffoli@xxxxxxxxxxx>]

Hello,
I'm testing a new supermicro motherboard with a couple of AMD istanbul +
AMD SR5690/SP5100 chipset and I've experienced very bad perfomance on domUs.

The dom0 is based on 2.6.31 (jeremy tree) and the domU is a debian lenny.

For example testing dom0 net with iperf I can see ~950 Mbit/s but
testing the domU I can see only 197 kbits/s.

Testing disk perfomance I've ~ 70MB/s on dom0 and ~22 MB/s on domU.

Do you have any suggestion?


Best regards,
Christian

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