From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <46B4E161.9080100@garzik.org> Date: Sat, 04 Aug 2007 16:28:17 -0400 From: Jeff Garzik MIME-Version: 1.0 Subject: Re: [PATCH 00/23] per device dirty throttling -v8 References: <20070803123712.987126000@chello.nl> <20070804063217.GA25069@elte.hu> <20070804070737.GA940@elte.hu> <20070804103347.GA1956@elte.hu> <20070804163733.GA31001@elte.hu> <46B4C0A8.1000902@garzik.org> <20070804191205.GA24723@lazybastard.org> <20070804192130.GA25346@elte.hu> <20070804211156.5f600d80@the-village.bc.nu> In-Reply-To: <20070804211156.5f600d80@the-village.bc.nu> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Alan Cox Cc: Ingo Molnar , =?ISO-8859-1?Q?J=F6rn_Engel?= , Linus Torvalds , Peter Zijlstra , linux-mm@kvack.org, Linux Kernel Mailing List , miklos@szeredi.hu, akpm@linux-foundation.org, neilb@suse.de, dgc@sgi.com, tomoki.sekiyama.qu@hitachi.com, nikita@clusterfs.com, trond.myklebust@fys.uio.no, yingchao.zhou@gmail.com, richard@rsk.demon.co.uk, david@lang.hm List-ID: Alan Cox wrote: > In some setups it will and in others it won't. Nor is it the only > application that has this requirement. Ext3 currently is a standards > compliant file system. Turn off atime and its very non standards > compliant, turn to relatime and its not standards compliant but nobody > will break (which is good) Linux has always been a "POSIX unless its stupid" type of system. For the upstream kernel, we should do the right thing -- noatime by default -- but allow distros and people that care about rigid compliance to easily change the default. (from another message) > If you want to sort this in Fedora for example you just need to package > and announce a desktop-tuning rpm which makes the relevant updates on > install and reverses them on remove. Stick the scheduler/vm tuning values > in as well and the disk queue tweaks. > > Regardless of the kernel defaults people will install such a package > en-mass... Sounds like an effective idea :) Though strictly in the context of atime vs. noatime, servers benefit from that too, not just desktop. Jeff -- 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