From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from d03relay04.boulder.ibm.com (d03relay04.boulder.ibm.com [9.17.195.106]) by e34.co.us.ibm.com (8.12.11.20060308/8.12.11) with ESMTP id k3RKuC8j021120 for ; Thu, 27 Apr 2006 16:56:12 -0400 Received: from d03av03.boulder.ibm.com (d03av03.boulder.ibm.com [9.17.195.169]) by d03relay04.boulder.ibm.com (8.12.10/NCO/VER6.8) with ESMTP id k3RKuCBg164086 for ; Thu, 27 Apr 2006 14:56:12 -0600 Received: from d03av03.boulder.ibm.com (loopback [127.0.0.1]) by d03av03.boulder.ibm.com (8.12.11/8.13.3) with ESMTP id k3RKuCeM008085 for ; Thu, 27 Apr 2006 14:56:12 -0600 Received: from austin.ibm.com (netmail1.austin.ibm.com [9.41.248.175]) by d03av03.boulder.ibm.com (8.12.11/8.12.11) with ESMTP id k3RKu21U007719 for ; Thu, 27 Apr 2006 14:56:11 -0600 Message-ID: <44512FC5.6090808@austin.ibm.com> Date: Thu, 27 Apr 2006 15:55:33 -0500 From: jschopp MIME-Version: 1.0 Subject: Re: Page host virtual assist patches. References: <20060424123412.GA15817@skybase> <20060424180138.52e54e5c.akpm@osdl.org> <444DCD87.2030307@yahoo.com.au> <1145953914.5282.21.camel@localhost> <444DF447.4020306@yahoo.com.au> <1145964531.5282.59.camel@localhost> In-Reply-To: <1145964531.5282.59.camel@localhost> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: schwidefsky@de.ibm.com Cc: Nick Piggin , Andrew Morton , linux-mm@kvack.org, frankeh@watson.ibm.com, rhim@cc.gatech.edu List-ID: > Which simple approach do you mean? The guest ballooner? That works > reasonably well for a small number of guests. If you keep adding guests > the overhead for the guest calls increases. Ultimately we believe that a > combination of the ballooner method and the new hva method will yield > the best results. Don't forget memory hotplug in your combination mix. Your ballooner fragments the hell out of your memory, and your hva method requires some work to keep the state updated. Memory hotplug on the other hand suffers from neither of those problems. That said, I rather like the hva method. It's quite clever. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org