From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752504AbYIDNws (ORCPT ); Thu, 4 Sep 2008 09:52:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755256AbYIDNwi (ORCPT ); Thu, 4 Sep 2008 09:52:38 -0400 Received: from 75-130-108-43.dhcp.oxfr.ma.charter.com ([75.130.108.43]:59111 "EHLO dev.haskins.net" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751340AbYIDNwi (ORCPT ); Thu, 4 Sep 2008 09:52:38 -0400 From: Gregory Haskins Subject: Re: oltp ~10% regression with 2.6.27-rc5 on stoakley machine To: Peter Zijlstra Cc: peterz@infradead.org, Lin Ming , linux-kernel , yanmin_zhang@linux.intel.com, mingo@elte.hu Date: Thu, 04 Sep 2008 09:50:13 -0400 Message-ID: <20080904134959.26109.90529.stgit@dev.haskins.net> In-Reply-To: <1220526360.8609.213.camel@twins> References: <1220526360.8609.213.camel@twins> User-Agent: StGIT/0.14.2 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Peter, Peter Zijlstra wrote: > > > Also, we used to have some auto-tuning in there, which dissapeared some > time ago, gregory brought it back to live recently, perhaps he likes to > share? :-) > Per your request, I brought those "revert" patches I had in the PQ branch forward to 2.6.27-rc5. They are completely unbuilt and untested, but here for your experimentation. -Greg --- Gregory Haskins (4): sched: make task_hot() once again use sd->cache_hot_time Revert "sched: zap the migration init / cache-hot balancing code" Revert "[PATCH] sched: remove cache_hot_time" revert "sched: sched_cacheflush is now unused" Documentation/kernel-parameters.txt | 43 +++ arch/ia64/kernel/setup.c | 15 + arch/mips/kernel/smp.c | 11 + arch/sparc/kernel/smp.c | 10 + arch/sparc64/kernel/smp.c | 27 ++ arch/x86/kernel/smpboot.c | 12 + include/asm-m32r/system.h | 10 + include/asm-mips/system.h | 10 + include/asm-parisc/system.h | 11 + include/asm-x86/system.h | 9 + include/linux/sched.h | 7 include/linux/topology.h | 1 kernel/sched.c | 499 ++++++++++++++++++++++++++++++++++- 13 files changed, 656 insertions(+), 9 deletions(-) -- Signature