WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-users

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

To: "Nick Couchman" <Nick.Couchman@xxxxxxxxx>, <xen-users@xxxxxxxxxxxxxxxxxxx>, "Ian Tobin" <itobin@xxxxxxxxxxxxx>
Subject: RE: [Xen-users] Problems with GPLPV network latency
From: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
Date: Wed, 9 Jun 2010 11:30:19 +1000
Cc:
Delivery-date: Tue, 08 Jun 2010 18:31:42 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <4C0E0B55020000990005EFB7@xxxxxxxxxxxxxxxxxxxxx>
List-help: <mailto:xen-users-request@lists.xensource.com?subject=help>
List-id: Xen user discussion <xen-users.lists.xensource.com>
List-post: <mailto:xen-users@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=unsubscribe>
References: <4C0E0B55020000990005EFB7@xxxxxxxxxxxxxxxxxxxxx>
Sender: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
Thread-index: AcsHHrD41ea4FMliQlqVPRKbGFvZVAAVJaNw
Thread-topic: [Xen-users] Problems with GPLPV network latency
> 
> Ian,
> I see some of the same behavior - pings from my Windows-based domUs
with GPL
> PV drivers have seemingly random latency times from < 1 ms to more
than 8000
> ms.  The funny thing is that I *know* this isn't the actual latency,
since I
> would notice a ping taking 8 seconds to get back - it happens very,
very
> rapidly.  There must be something in the GPL PV network driver code
that is
> supposed to (help) compute this that is malfunctioning.
> 

I think you can mitigate this by fiddling with the timer options in your
config file.

James

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