Re: [Xen-bugs] Traffic issues Dom0 > DomU

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Thu, Jan 27, 2011 at 09:43:25PM +0100, W. Bontekoe - WIPA Nederland B.V. 
wrote:
> Yes i did, exactly. But also there i found no changes. Every VM that i move 
> to this host has the exact same problem though they use seeral 
> kernals/versions. I compared all VM's, nothing.
> 
> I even did a reinstall of the dom0 twice, updated all device drivers (HP PSP) 
> .. Nothing.

What happens if you modify the size of the ping? Say ping -s80 or ping -s2000 
does it work better or worst?

> 
> Its really a problem on the Xen bridge (peth0), even in NAT mode.... 
> 
> 
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> 
> Wieger Bontekoe
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> Op 27 jan. 2011 om 21:40 heeft "Konrad Rzeszutek Wilk" 
> <konrad.wilk@xxxxxxxxxx> het volgende geschreven:
> 
> >> When i ping from the dom0 to the domU:
> >> 
> >> --- XX.XX.XX.9 ping statistics ---
> >> 19 packets transmitted, 12 received, 36% packet loss, time 18021ms
> >> rtt min/avg/max/mdev = 0.032/0.181/1.794/0.486 ms
> >> 
> >> This means that it drops a lot of connections and this domU seriously can't
> >> function like this. I've never seen this on any of our other Xen servers so
> >> this one is really bugging me.
> >> 
> >> Anybody else had this problem before? The log is not showing anything (no
> >> errors or faults)
> > 
> > You tried the usual assortment of turning gso/tso/whatnot on/off? Look
> > in the xen-devel mailing list for the proper commands.
> > 
> > 
> 

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