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-devel

[Xen-devel] More on networking hang

To: xen-devel@xxxxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] More on networking hang
From: Rob Gardner <rob.gardner@xxxxxx>
Date: Thu, 09 Sep 2004 15:43:27 -0600
Delivery-date: Thu, 09 Sep 2004 22:47:58 +0100
Envelope-to: steven.hand@xxxxxxxxxxxx
In-reply-to: <E1C2hFe-00016v-00@xxxxxxxxxxxxxxxxx>
List-archive: <http://sourceforge.net/mailarchive/forum.php?forum=xen-devel>
List-help: <mailto:xen-devel-request@lists.sourceforge.net?subject=help>
List-id: List for Xen developers <xen-devel.lists.sourceforge.net>
List-post: <mailto:xen-devel@lists.sourceforge.net>
List-subscribe: <https://lists.sourceforge.net/lists/listinfo/xen-devel>, <mailto:xen-devel-request@lists.sourceforge.net?subject=subscribe>
List-unsubscribe: <https://lists.sourceforge.net/lists/listinfo/xen-devel>, <mailto:xen-devel-request@lists.sourceforge.net?subject=unsubscribe>
References: <E1C2hFe-00016v-00@xxxxxxxxxxxxxxxxx>
Sender: xen-devel-admin@xxxxxxxxxxxxxxxxxxxxx
User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax)
I saw something go by on the list a week or so ago about network hangs, and I may be observing something similar.

The basic setup is: two guest domains running apache, and a different box running httpperf against them, 100 requests per second for the same 100kbyte file.

This runs ok for a time, then suddenly chokes and all traffic comes to a stop. Then a few seconds later traffic seems to pick up again.

This behavior is not observed with a workload of 40 requests/second. At 80/second, the problem starts appearing, but not very frequently.

We can provide sufficient detail if anyone wants to try to reproduce this.

Have there been any fixes relating to this lately? We are using xen bits that are a few weeks old right now.


Rob Gardner
HP




-------------------------------------------------------
This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170
Project Admins to receive an Apple iPod Mini FREE for your judgement on
who ports your project to Linux PPC the best. Sponsored by IBM. Deadline: Sept. 13. Go here: http://sf.net/ppc_contest.php
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.sourceforge.net/lists/listinfo/xen-devel