Re: [Xen-users] dom0 lost packets.

[Steve Wray <steve.wray@xxxxxxxxx>]

Bogdan B. Rudas wrote:
> On Wed, 23 Apr 2008 13:12:11 -0400
> "Ross S. W. Walker" <rwalker@xxxxxxxxxxxxx> wrote:
> > I heard on the list that disabling checksum offloading on the NIC
> > with ethtool helps clear it up. I believe it is on TX only and this
> > is of course on the physical interface in dom0.
> Thanx for your advice.
[snip]
> There are still packet loss:

I'm also seeing large amounts of packet loss as displayed in xm top for 
the vif of any domU which is doing disk and network IO concurrently.
Network performance is fine by itself, but when there is disk IO at the 
same time network gets very bad.
Tried disabling checksum offloading and this has made no difference.


> dom0: 
>
> 44745 packets transmitted, 43039 received, 3% packet loss, time 44745397ms
> rtt min/avg/max/mdev = 0.135/0.199/4.386/0.061 ms
>
> domU:
>
> 44643 packets transmitted, 43879 received, 1% packet loss, time 44643431ms
> rtt min/avg/max/mdev = 0.153/0.208/2.991/0.043 ms
>
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