From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vasiliy G Tolstov Subject: RE: memory size inside domU less than memory in domU config Date: Thu, 16 Jun 2011 23:18:58 +0400 Message-ID: <1308251938.28653.9.camel@mobile> References: <1308248350.28653.5.camel@mobile> <20110616184026.GA27795@dumpdata.com 1308249917.28653.6.camel@mobile> Reply-To: v.tolstov@selfip.ru Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: 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: Dan Magenheimer Cc: xen-devel@lists.xensource.com, Konrad Wilk List-Id: xen-devel@lists.xenproject.org On Thu, 2011-06-16 at 12:12 -0700, Dan Magenheimer wrote: > I'm not sure, but I think Vasiliy's question is: > > Why/where is 78MB of memory being "wasted"? If one specifies > 2048MB (4096MB) of memory for the guest, why doesn't the guest > kernel report 2048MB (4096MB)? > > Using Vasiliy's /proc/meminfo output from below: > 2048MB = 2097152KB; - 2016564KB = 80588KB = 78MB > 4096MB = 4194304KB; - 4113716KB = 80588KB = 78MB > > Dan > > Thanks... for the memory! > I really could use more / my throughput's on the floor > The balloon is flat / my swap disk's fat / I've OOM's in store > Overcommitted so much > (with apologies to Bob Hope) =) Thanks Dan. May be this happening because i check dom0 support. I'm try to rebuild kernel to use Daniel's memory hotplug and disable dom0 support.