From mboxrd@z Thu Jan 1 00:00:00 1970 From: Simon Martin Subject: Re: Strange interdependace between domains Date: Thu, 13 Feb 2014 17:28:19 +0000 Message-ID: <133818465.20140213172819@gmail.com> References: <1646915994.20140213165604@gmail.com> <1392311258.9138.3.camel@kazak.uk.xensource.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1392311258.9138.3.camel@kazak.uk.xensource.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Ian Campbell Cc: xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org > On Thu, 2014-02-13 at 16:56 +0000, Simon Martin wrote: >> I can't understand this as disk activity should be running on cores 0, >> 1 and 2, but never on core 3. The only thing running on core 3 should >> by my paravirtual machine and the hypervisor stub. >> >> Any idea what's going on? > Is core 3 actual a hyperthread -- IOW it is sharing processor execution > resources with e.g. core 2. Or shared L2 caches etc. > Ian. Thanks Ian. Very good point. It is a hyperthread. I will reconfigure tomorrow, retest and let you know, but that make sense. Regards. -- Best regards, Simon mailto:furryfuttock@gmail.com