From mboxrd@z Thu Jan 1 00:00:00 1970 From: Anthony Liguori Subject: Re: [PATCH 0/4] Swapping Date: Sat, 13 Oct 2007 14:48:31 -0500 Message-ID: <4711210F.40802@codemonkey.ws> References: <47102823.2000600@qumranet.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org To: Izik Eidus Return-path: In-Reply-To: <47102823.2000600-atKUWr5tajBWk0Htik3J/w@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: kvm.vger.kernel.org Izik Eidus wrote: > this patchs allow the guest not shadowed memory to be swapped out. > > to make it the must effective you should run -kvm-shadow-memory 1 (witch > will make your machine slow) > with -kvm-shadow-memory 1, 3giga memory guest can get to be just 32mb > on physical host! > > when not using -kvm-shadow-memory, i saw 4100mb machine getting to as > low as 168mb on the physical host (not as bad as i thought it would be, > and surely not as bad as it can be with 41mb of shadow pages :)) > So what exactly does this option do? Is it really worth exposing it as an option if it slows down guests so much? At least, a better name for the option would be nice. Regards, Anthony Liguori ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/