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] [xen-unstable bisection] complete test-amd64-i386-rhel6h

To: Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>
Subject: Re: [Xen-devel] [xen-unstable bisection] complete test-amd64-i386-rhel6hvm-intel
From: Laszlo Ersek <lersek@xxxxxxxxxx>
Date: Thu, 01 Sep 2011 19:22:39 +0200
Cc: Drew Jones <drjones@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, keir@xxxxxxx, stefano.stabellini@xxxxxxxxxxxxx, Igor Mammedov <imammedo@xxxxxxxxxx>, Paolo Bonzini <pbonzini@xxxxxxxxxx>
Delivery-date: Thu, 01 Sep 2011 10:34:57 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <20063.45607.355820.209628@xxxxxxxxxxxxxxxxxxxxxxxx>
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: <E1Qz9bA-0008S0-Hh@xxxxxxxxxxxxxxxxxxx> <20063.45607.355820.209628@xxxxxxxxxxxxxxxxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.20) Gecko/20110817 Fedora/3.1.12-1.fc14 Lightning/1.0b3pre Mnenhy/0.8.3 Thunderbird/3.1.12
On 09/01/11 18:26, Ian Jackson wrote:

job test-amd64-i386-rhel6hvm-intel

   changeset:   23802:bb9b81008733
   user:        Laszlo Ersek<lersek@xxxxxxxxxx>
   date:        Wed Aug 31 15:16:14 2011 +0100

       x86: Increase the default NR_CPUS to 256

       Changeset 21012:ef845a385014 bumped the default to 128 about one and a
       half years ago. Increase it now to 256, as systems with eg. 160
       logical CPUs are becoming (have become) common.

       Signed-off-by: Laszlo Ersek<lersek@xxxxxxxxxx>

My bisector is pretty reliable nowadays.  Looking at the revision
graph it tested before/after/before/after/before/after, ie three times
each on the same host.

This change looks innocuous enough TBH.  Is there any way this change
could have broken a PV-on-HVM guest ?  Note that RHEL6, which is what
this is testing, seems to generally be full of bugs.

If the problem is indeed a bug in the current RHEL6 then I will add
this test to the "do not care" list.

In what way was the guest broken? How many physical cores/threads was the hypervisor running on?

Thanks,
lacos

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