RE: [Xen-users] Problems with GPLPV network latency

["Nick Couchman" <Nick.Couchman@xxxxxxxxx>]

Did you try James' suggestion of disabling Checksum Offloading, Large Send 
Offloads, and Scatter/Gather?  If I have Checksum Offloading enabled, I get 
incorrect checksums on most of my packets.

-Nick

>>> On 2010/06/08 at 13:37, "Ian Tobin" <itobin@xxxxxxxxxxxxx> wrote: 
> Im seeing high latency then total loss of packets, the server will not
> respond to anything inc RDP.
> 
> The only way to start the network again is to ping an external IP from
> within the DomU but the response time to pings ext --- > DomU is still
> high, 200ms to 1200ms
> 
> Pings from Domu --> ext is around 15ms so it seems to be a one way slow
> down
> 
> Ian
> 
> 
> -----Original Message-----
> From: Nick Couchman [mailto:Nick.Couchman@xxxxxxxxx] 
> Sent: 08 June 2010 16:22
> To: James Harper; xen-users@xxxxxxxxxxxxxxxxxxx; Ian Tobin
> Subject: RE: [Xen-users] Problems with GPLPV network latency
> 
>> 
>> Are you really seeing high latency or just reported high latency? Eg
>> when it says 1200ms, does it really take an extra second?
> 
> I'm seeing the high latency numbers reported in Windows, but not the
> actual latency.  Must be the multi-CPU issue you mentioned, as I have 4
> vCPUs assigned to my domU.
> 
> -Nick
> 
> 
> 
> 
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