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 ESMTP id CBD5B6005A4 for ; Mon, 4 Jan 2010 16:47:00 -0500 (EST) Subject: Re: [RFC][PATCH 0/8] Speculative pagefault -v3 From: Peter Zijlstra In-Reply-To: <4B42606F.3000906@redhat.com> References: <20100104182429.833180340@chello.nl> <4B42606F.3000906@redhat.com> Content-Type: text/plain; charset="UTF-8" Date: Mon, 04 Jan 2010 22:46:13 +0100 Message-ID: <1262641573.6408.434.camel@laptop> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org To: Rik van Riel Cc: "Paul E. McKenney" , KAMEZAWA Hiroyuki , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" , "minchan.kim@gmail.com" , cl@linux-foundation.org, "hugh.dickins" , Nick Piggin , Ingo Molnar , Linus Torvalds List-ID: On Mon, 2010-01-04 at 16:41 -0500, Rik van Riel wrote: > On 01/04/2010 01:24 PM, Peter Zijlstra wrote: > > Patch series implementing speculative page faults for x86. > > Fun, but why do we need this? People were once again concerned with mmap_sem contention on threaded apps on large machines. Kame-san posted some patches, but I felt they weren't quite crazy enough ;-) > What improvements did you measure? I got it not to crash :-) Although I'd not be surprised if other people do manage, it needs more eyes. > I'll take a look over the patches to see whether they're > sane... More appreciated, thanks! -- 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