From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail202.messagelabs.com (mail202.messagelabs.com [216.82.254.227]) by kanga.kvack.org (Postfix) with SMTP id D4A436B0062 for ; Fri, 6 Nov 2009 12:34:17 -0500 (EST) Received: from localhost (smtp.ultrahosting.com [127.0.0.1]) by smtp.ultrahosting.com (Postfix) with ESMTP id 5D6DC82C3EC for ; Fri, 6 Nov 2009 12:41:06 -0500 (EST) Received: from smtp.ultrahosting.com ([74.213.175.253]) by localhost (smtp.ultrahosting.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 7bOYwxQGduiH for ; Fri, 6 Nov 2009 12:41:06 -0500 (EST) Received: from V090114053VZO-1 (unknown [74.213.171.31]) by smtp.ultrahosting.com (Postfix) with ESMTP id C872082C48D for ; Fri, 6 Nov 2009 12:40:56 -0500 (EST) Date: Fri, 6 Nov 2009 12:32:48 -0500 (EST) From: Christoph Lameter Subject: Re: [MM] Make mm counters per cpu instead of atomic V2 In-Reply-To: <20091106122344.51118116.kamezawa.hiroyu@jp.fujitsu.com> Message-ID: References: <20091104234923.GA25306@redhat.com> <20091106101106.8115e0f1.kamezawa.hiroyu@jp.fujitsu.com> <20091106122344.51118116.kamezawa.hiroyu@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org To: KAMEZAWA Hiroyuki Cc: Dave Jones , "hugh.dickins@tiscali.co.uk" , linux-mm@kvack.org, linux-kernel@vger.kernel.org, akpm@linux-foundation.org, Tejun Heo List-ID: On Fri, 6 Nov 2009, KAMEZAWA Hiroyuki wrote: > BTW, can't we have single-thread-mode for this counter ? > Usual program's read-side will get much benefit..... Thanks for the measurements. A single thread mode would be good. Ideas on how to add that would be appreciated. -- 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