From mboxrd@z Thu Jan 1 00:00:00 1970 From: Johannes Weiner Subject: Re: [patch 9/9] mm: workingset: keep shadow entries in check Date: Wed, 14 Aug 2013 10:41:46 -0400 Message-ID: <20130814144146.GA28858@cmpxchg.org> References: <1375829050-12654-1-git-send-email-hannes@cmpxchg.org> <1375829050-12654-10-git-send-email-hannes@cmpxchg.org> <20130811235631.GO19750@two.firstfloor.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-mm@kvack.org, Andrea Arcangeli , Andrew Morton , Greg Thelen , Christoph Hellwig , Hugh Dickins , Jan Kara , KOSAKI Motohiro , Mel Gorman , Minchan Kim , Peter Zijlstra , Rik van Riel , Michel Lespinasse , Seth Jennings , Roman Gushchin , Ozgun Erdogan , Metin Doslu , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org To: Andi Kleen Return-path: Content-Disposition: inline In-Reply-To: <20130811235631.GO19750@two.firstfloor.org> Sender: owner-linux-mm@kvack.org List-Id: linux-fsdevel.vger.kernel.org Hey Andi! On Mon, Aug 12, 2013 at 01:56:31AM +0200, Andi Kleen wrote: > > I really like the idea of using the spare slots in the radix tree > for something useful. It's amazing we haven't used that before. > > I wonder if with some clever encoding even more information could be fit? What do you have in mind? > e.g. I assume you don't really need all bits of the refault distance, > just a good enough approximation. > > -Andi > -- > ak@linux.intel.com -- Speaking for myself only. -- 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 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932608Ab3HNOmd (ORCPT ); Wed, 14 Aug 2013 10:42:33 -0400 Received: from zene.cmpxchg.org ([85.214.230.12]:52859 "EHLO zene.cmpxchg.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932352Ab3HNOmc (ORCPT ); Wed, 14 Aug 2013 10:42:32 -0400 Date: Wed, 14 Aug 2013 10:41:46 -0400 From: Johannes Weiner To: Andi Kleen Cc: linux-mm@kvack.org, Andrea Arcangeli , Andrew Morton , Greg Thelen , Christoph Hellwig , Hugh Dickins , Jan Kara , KOSAKI Motohiro , Mel Gorman , Minchan Kim , Peter Zijlstra , Rik van Riel , Michel Lespinasse , Seth Jennings , Roman Gushchin , Ozgun Erdogan , Metin Doslu , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [patch 9/9] mm: workingset: keep shadow entries in check Message-ID: <20130814144146.GA28858@cmpxchg.org> References: <1375829050-12654-1-git-send-email-hannes@cmpxchg.org> <1375829050-12654-10-git-send-email-hannes@cmpxchg.org> <20130811235631.GO19750@two.firstfloor.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20130811235631.GO19750@two.firstfloor.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hey Andi! On Mon, Aug 12, 2013 at 01:56:31AM +0200, Andi Kleen wrote: > > I really like the idea of using the spare slots in the radix tree > for something useful. It's amazing we haven't used that before. > > I wonder if with some clever encoding even more information could be fit? What do you have in mind? > e.g. I assume you don't really need all bits of the refault distance, > just a good enough approximation. > > -Andi > -- > ak@linux.intel.com -- Speaking for myself only.