From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wi0-f175.google.com (mail-wi0-f175.google.com [209.85.212.175]) by kanga.kvack.org (Postfix) with ESMTP id 7B8F06B0069 for ; Wed, 22 Oct 2014 08:35:29 -0400 (EDT) Received: by mail-wi0-f175.google.com with SMTP id d1so1237318wiv.2 for ; Wed, 22 Oct 2014 05:35:29 -0700 (PDT) Received: from mail-wg0-x22d.google.com (mail-wg0-x22d.google.com. [2a00:1450:400c:c00::22d]) by mx.google.com with ESMTPS id am1si1631102wjc.38.2014.10.22.05.35.27 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 22 Oct 2014 05:35:28 -0700 (PDT) Received: by mail-wg0-f45.google.com with SMTP id m15so3728081wgh.16 for ; Wed, 22 Oct 2014 05:35:27 -0700 (PDT) Date: Wed, 22 Oct 2014 14:35:23 +0200 From: Ingo Molnar Subject: Re: [RFC][PATCH 0/6] Another go at speculative page faults Message-ID: <20141022123523.GA24499@gmail.com> References: <20141020215633.717315139@infradead.org> <20141021162340.GA5508@gmail.com> <20141021172527.GH3219@twins.programming.kicks-ass.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20141021172527.GH3219@twins.programming.kicks-ass.net> Sender: owner-linux-mm@kvack.org List-ID: To: Peter Zijlstra Cc: torvalds@linux-foundation.org, paulmck@linux.vnet.ibm.com, tglx@linutronix.de, akpm@linux-foundation.org, riel@redhat.com, mgorman@suse.de, oleg@redhat.com, mingo@redhat.com, minchan@kernel.org, kamezawa.hiroyu@jp.fujitsu.com, viro@zeniv.linux.org.uk, laijs@cn.fujitsu.com, dave@stgolabs.net, linux-kernel@vger.kernel.org, linux-mm@kvack.org * Peter Zijlstra wrote: > On Tue, Oct 21, 2014 at 06:23:40PM +0200, Ingo Molnar wrote: > > > > * Peter Zijlstra wrote: > > > > > My Ivy Bridge EP (2*10*2) has a ~58% improvement in pagefault throughput: > > > > > > PRE: > > > 149,441,555 page-faults ( +- 1.25% ) > > > > > > POST: > > > 236,442,626 page-faults ( +- 0.08% ) > > > > > My Ivy Bridge EX (4*15*2) has a ~78% improvement in pagefault throughput: > > > > > > PRE: > > > 105,789,078 page-faults ( +- 2.24% ) > > > > > > POST: > > > 187,751,767 page-faults ( +- 2.24% ) > > > > I guess the 'PRE' and 'POST' numbers should be flipped around? > > Nope, its the number of page-faults serviced in a fixed amount of time > (60 seconds), therefore higher is better. Ah, okay! Thanks, Ingo -- 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