From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail190.messagelabs.com (mail190.messagelabs.com [216.82.249.51]) by kanga.kvack.org (Postfix) with SMTP id 011265F0001 for ; Fri, 17 Apr 2009 03:08:00 -0400 (EDT) Received: by yw-out-1718.google.com with SMTP id 4so506634ywq.26 for ; Fri, 17 Apr 2009 00:08:07 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <200904170355.26294.nickpiggin@yahoo.com.au> References: <1239249521-5013-1-git-send-email-ieidus@redhat.com> <20090414150903.b01fa3b9.akpm@linux-foundation.org> <200904170355.26294.nickpiggin@yahoo.com.au> Date: Fri, 17 Apr 2009 00:08:07 -0700 Message-ID: <6934efce0904170008p45cba2c4l3e9ca9f8775c7bde@mail.gmail.com> Subject: Re: [PATCH 0/4] ksm - dynamic page sharing driver for linux v3 From: Jared Hulbert Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org To: Nick Piggin Cc: Andrew Morton , Izik Eidus , linux-kernel@vger.kernel.org, kvm@vger.kernel.org, linux-mm@kvack.org, avi@redhat.com, aarcange@redhat.com, chrisw@redhat.com, mtosatti@redhat.com, hugh@veritas.com, kamezawa.hiroyu@jp.fujitsu.com List-ID: > As everyone knows, my favourite thing is to say nasty things about any > new feature that adds complexity to common code. I feel like crying to > hear about how many more instances of MS Office we can all run, if only > we apply this patch. And the poorly written HPC app just sounds like > scrapings from the bottom of justification barrel. > > I'm sorry, maybe I'm way off with my understanding of how important > this is. There isn't too much help in the changelog. A discussion of > where the memory savings comes from, and how far does things like > sharing of fs image, or ballooning goes and how much extra savings we > get from this... with people from other hypervisors involved as well. > Have I missed this kind of discussion? Nick, I don't know about other hypervisors, fs and balloonings, but I have tried this out. It works. It works on apps I don't consider, "poorly written". I'm very excited about this. I got >10% saving in a roughly off the shelf embedded system. No user noticeable performance impact. -- 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