From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756956AbYENEXu (ORCPT ); Wed, 14 May 2008 00:23:50 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751363AbYENEXm (ORCPT ); Wed, 14 May 2008 00:23:42 -0400 Received: from fgwmail7.fujitsu.co.jp ([192.51.44.37]:60099 "EHLO fgwmail7.fujitsu.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751276AbYENEXl (ORCPT ); Wed, 14 May 2008 00:23:41 -0400 Date: Wed, 14 May 2008 13:22:52 +0900 From: KOSAKI Motohiro To: Nadia Derbey Subject: Re: [PATCH 0/9] Scalability requirements for sysv ipc - v3 Cc: kosaki.motohiro@jp.fujitsu.com, KOSAKI Motohiro , manfred@colorfullife.com, paulmck@linux.vnet.ibm.com, lnxninja@linux.vnet.ibm.com, linux-kernel@vger.kernel.org, efault@gmx.de, akpm@linux-foundation.org In-Reply-To: <4829A15A.1070203@bull.net> References: <2f11576a0805070619x11c462fdpbee1b652a83d7071@mail.gmail.com> <4829A15A.1070203@bull.net> Message-Id: <20080514132134.1A98.KOSAKI.MOTOHIRO@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Mailer: Becky! ver. 2.42 [ja] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > Well, looks like the description was not clear, sorry for that! > 1st column: 2.6.25-rc3-mm1 with original ipc implementation > (i.e. ipcs stored in an array) > 2nd column: 2.6.25-rc3-mm1, with ipcs stored in an idr tree > actually, that's when the performance regression > had been introduced. > 3rd column: 2.6.25-mm1, still with the same implementation > i.e. still with degraded performances. > 4th column: 2.6.25-mm1 + rcu-based implementation of the idr, > which is the current patch series. > > Hope this makes things more clear. Oh, I see that your patchset has very nice performance result :) Thanks!