From mboxrd@z Thu Jan 1 00:00:00 1970 From: Konrad Rzeszutek Wilk Subject: Re: Re: Re: AW: Re: AW: Load increase after memory upgrade? Date: Tue, 28 Jun 2011 16:34:21 -0400 Message-ID: <20110628203421.GC23212@dumpdata.com> References: <20110628145721.GC16290@dumpdata.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Carsten Schiers Cc: linux , xen-devel List-Id: xen-devel@lists.xenproject.org On Tue, Jun 28, 2011 at 10:22:34PM +0200, Carsten Schiers wrote: > >a). What is the version of Dom0? Are you swapping that out? If so, and > you > >want the latests then the next step is to do: > > Dom0 is jeremy's git xen/stable-2.6.32.x in 64 Bit. DomUs are 32 Bit. > Shall I > experimently change that to what you recommended? Lets first do the c) experiment as that will likely explain your load average increase. > > > >c). If you want to see if the fault here lies in the bounce buffer > being used more > >often in the DomU b/c you have 8GB of memory now and you end up using > more pages > >past 4GB (in DomU), I can cook up a patch to figure this out. But an > easier way is > >to just do (on the Xen hypervisor line): mem=4G and that will make > think you only have > >4GB of physical RAM. If the load comes back to the normal "amount" > then the likely > >culprit is that and we can think on how to fix this. > > So I will reboot with the a.m. parameter, but that's not possible right > now. I > will keep you informed. Eventually I can combine that with the test a) > on Thursday. > > Carsten.