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

RE: [Xen-devel] [PATCH] Make HZ a boot-time configurable

To: "Kip Macy" <kmacy@xxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-devel] [PATCH] Make HZ a boot-time configurable
From: "Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>
Date: Mon, 9 May 2005 06:21:03 +0100
Delivery-date: Mon, 09 May 2005 05:20:39 +0000
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
Thread-index: AcVUC92DGsXt1KkzRJ6p1rJ3Mk+2TwASstQw
Thread-topic: [Xen-devel] [PATCH] Make HZ a boot-time configurable
> I understand the trade-offs that xen is currently optimized 
> for. However, I don't think that HZ=100 is right for all 
> places and all times. I also think that users would 
> appreciate it if they didn't have to go edit config.h and 
> re-compile if they wanted to change HZ. For those using xen 
> as a platform for development it probably makes sense if HZ 
> is the same as the kernel they intend to ship. For example, 
> very early on in testing with HZ=1000 I hit an interrupt race 
> condition in XenFreeBSD that I have never seen before.

I'd really prefer to kill the periodic ticker in Xen altogether. If
domains want a periodic ticker they should just set their alarm timer
appropriately.

Ian


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