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

["Ian Tobin" <itobin@xxxxxxxxxxxxx>]

Yes i tried that but didn't make any difference, i think its something
more fundamental on this occasion

Ian

-----Original Message-----
From: Nick Couchman [mailto:Nick.Couchman@xxxxxxxxx] 
Sent: 08 June 2010 22:39
To: James Harper; xen-users@xxxxxxxxxxxxxxxxxxx; Ian Tobin
Subject: RE: [Xen-users] Problems with GPLPV network latency

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
> 
> 
> 
> 
> --------
> 
> This e-mail may contain confidential and privileged material for the
> sole use of the intended recipient.  If this email is not intended for
> you, or you are not responsible for the delivery of this message to
the
> intended recipient, please note that this message may contain SEAKR
> Engineering (SEAKR) Privileged/Proprietary Information.  In such a
case,
> you are strictly prohibited from downloading, photocopying,
distributing
> or otherwise using this message, its contents or attachments in any
way.
> If you have received this message in error, please notify us
immediately
> by replying to this e-mail and delete the message from your mailbox.
> Information contained in this message that does not relate to the
> business of SEAKR is neither endorsed by nor attributable to SEAKR.




--------

This e-mail may contain confidential and privileged material for the
sole use of the intended recipient.  If this email is not intended for
you, or you are not responsible for the delivery of this message to the
intended recipient, please note that this message may contain SEAKR
Engineering (SEAKR) Privileged/Proprietary Information.  In such a case,
you are strictly prohibited from downloading, photocopying, distributing
or otherwise using this message, its contents or attachments in any way.
If you have received this message in error, please notify us immediately
by replying to this e-mail and delete the message from your mailbox.
Information contained in this message that does not relate to the
business of SEAKR is neither endorsed by nor attributable to SEAKR.



_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users