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] So I tried to use xentrace...

To: George Dunlap <george.dunlap@xxxxxxxxxxxxx>
Subject: Re: [Xen-devel] So I tried to use xentrace...
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Date: Fri, 07 May 2010 22:03:04 -0700
Cc: Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Keir Fraser <Keir.Fraser@xxxxxxxxxxxxx>
Delivery-date: Fri, 07 May 2010 22:03:59 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <4BE48332.6040209@xxxxxxxxxxxxx>
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/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
References: <4BDB4CCC.3080405@xxxxxxxx> <n2ode76405a1005071348m8f871b8cn49e50dff487943e6@xxxxxxxxxxxxxx> <4BE47F26.50904@xxxxxxxx> <4BE48332.6040209@xxxxxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100430 Fedora/3.0.4-2.fc12 Lightning/1.0b2pre Thunderbird/3.0.4
On 05/07/2010 02:16 PM, George Dunlap wrote:
> Jeremy Fitzhardinge wrote:
>>>> (XEN) ----[ Xen-4.1-unstable  x86_64  debug=y  Not tainted ]----
>>>> (XEN) CPU:    1
>>>> (XEN) RIP:    e008:[<ffff82c4801215b3>] check_lock+0x1b/0x45
>>>>           
>>
>> This suggests the problem is with misusing a lock in the wrong interrupt
>> context, rather than anything to do with sizes.
>>   
> Except that, it works for me if I use -S 32, and doesn't if I use -S
> 512 (on my 2-core box, equivalent # of pages to -S 256 on your 4-core
> box). :-)  Try it, I suspect it will work.

Yes, it does.  But I'm seeing some pretty odd things while xentrace is
running: first time all my SATA drives stopped responding, and the
second time my ethernet device started getting tx watchdog timeouts. 
Perhaps the large amount of IO caused by xentrace is causing other bugs
to become apparent, but this has been an otherwise very stable system...

    J

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

<Prev in Thread] Current Thread [Next in Thread>