From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sitsofe Wheeler Subject: Re: [PATCH, resend] relatime: Let relatime update atime at least once per day Date: Sun, 28 Dec 2008 22:53:05 +0000 Message-ID: <49580351.8050800@yahoo.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: ?ric Piel , Matthew Garrett , linux-fsdevel@vger.kernel.org To: Matthew Wilcox Return-path: Received: from pih-relay04.plus.net ([212.159.14.17]:37921 "EHLO pih-relay04.plus.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752633AbYL2AhL (ORCPT ); Sun, 28 Dec 2008 19:37:11 -0500 In-Reply-To: Sender: linux-fsdevel-owner@vger.kernel.org List-ID: Matthew Wilcox wrote: > On Sun, Dec 28, 2008 at 10:24:55PM +0100, ?ric Piel wrote: >> Yes, it might bring important drawbacks: performance-wise, relatime will >> become more like atime, making it much less useful. There is also a >> significant number of desktop computers that are turned on once a day, >> the boot time may get hindered by those additional writes. > > Huh? Nobody's ever claimed that atime writes cost a significant amount > of performance. The problem that relatime is designed to solve is I believe Ingo Molnar did - http://kerneltrap.org/node/14148 .