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

To: "Nick Couchman" <Nick.Couchman@xxxxxxxxx>, "James Harper" <james.harper@xxxxxxxxxxxxxxxx>, <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-users] Problems with GPLPV network latency
From: "Ian Tobin" <itobin@xxxxxxxxxxxxx>
Date: Tue, 8 Jun 2010 20:37:28 +0100
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Thread-topic: [Xen-users] Problems with GPLPV network latency
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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