From: Amit Gud Subject: Re: [PATCH] NFS: Add acreg{min,max} and acdir{min,max} in milliseconds Date: Mon, 15 Jun 2009 15:53:05 -0700 Message-ID: <4A36D0D1.3000904@akamai.com> References: <200906091832.50633.agud@akamai.com> <1244636844.24750.23.camel@heimdal.trondhjem.org> <4A300CE3.8080502@akamai.com> <025BEFCD-2F56-4E29-99F9-1939867B48A7@fys.uio.no> <4A316814.7030609@akamai.com> <1244754888.5047.132.camel@heimdal.trondhjem.org> <4A32ACDB.90802@akamai.com> <1244836259.19533.19.camel@heimdal.trondhjem.org> <4A32CD5D.2070502@akamai.com> <1244846673.32257.69.camel@heimdal.trondhjem.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Cc: "linux-nfs@vger.kernel.org" , Steve Dickson , "gud-OYTqUY/oFF8@public.gmane.org" , "Uhlenkott, Jason" To: Trond Myklebust Return-path: Received: from prod-mail-xrelay04.akamai.com ([96.6.114.79]:56099 "EHLO prod-mail-xrelay04.akamai.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752315AbZFOWwl (ORCPT ); Mon, 15 Jun 2009 18:52:41 -0400 In-Reply-To: <1244846673.32257.69.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org> Sender: linux-nfs-owner@vger.kernel.org List-ID: Trond Myklebust wrote: > It boils down to this: I'm extremely reluctant to get into an arms race > of adding ever more mount options for increasingly finer-tuned attribute > cache timeouts. While such an option may meet _your_ machine room > requirements here and now, it becomes tiresome over the years as > machines gain power, and people first start lobbying for millisecond > timeouts, then microseconds, nanoseconds, pico... in order to catch up. > It only makes sense to make machines more powerful and put that power to optimum use. If keeping up with increased resolution is an issue, you think something like "-o unit=ms acregmin=..." would be better? 'unit' can apply to all the time related options defaulting to seconds. AG -- May the source be with you. http://cis.ksu.edu/~gud