From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754792AbbHJQpT (ORCPT ); Mon, 10 Aug 2015 12:45:19 -0400 Received: from e34.co.us.ibm.com ([32.97.110.152]:53786 "EHLO e34.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753826AbbHJQpR (ORCPT ); Mon, 10 Aug 2015 12:45:17 -0400 X-Helo: d03dlp01.boulder.ibm.com X-MailFrom: paulmck@linux.vnet.ibm.com X-RcptTo: linux-kernel@vger.kernel.org Date: Mon, 10 Aug 2015 09:45:12 -0700 From: "Paul E. McKenney" To: netoptimizer@brouer.com, jesper.brouer@gmail.com, jesper@brouer.com, aravinda@linux.vnet.ibm.com Cc: linux-kernel@vger.kernel.org Subject: Fw: Re: Linux Plumbers funding to go? / two minconf's Message-ID: <20150810164512.GD3862@linux.vnet.ibm.com> Reply-To: paulmck@linux.vnet.ibm.com MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 15081016-0017-0000-0000-00000CF924DA Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Aug 06, 2015 at 05:39:28PM +0200, Jesper Dangaard Brouer wrote: > Specifically for Paul: I would like to discuss with you Paul how we can > speed up RCU object freeing, by using my new SLAB/slub bulk API[*]. > The delayed free by RCU cause us to hit the slub slowpath... I'm hoping > to speedup this up by bulk freeing... hoping to mitigate the effect of > "rcuo" slowdown. Specifically I'm looking for stress testing RCU > tools, as I want to measure the effect/improvement. > > [*] http://thread.gmane.org/gmane.linux.kernel.mm/135704 > > p.s. I'm on vacation ATM, thus Cc. jesper.brouer@gmail.com or > jesper@brouer.com. Just thought I should get you in touch with Aravida Prasad (CCed), who has been doing some related work in speeding up RCU/slab freeing. Thanx, Paul