From: "Chris Fanning" Subject: Re: [NFS] sync, async, write speeds. Date: Fri, 19 Sep 2008 09:40:00 +0200 Message-ID: <215ff4410809190040w424d2cc2sd1e119a90d64cc6d@mail.gmail.com> References: <215ff4410809170035s38183fe3r51aeea62939b6327@mail.gmail.com> <48D0DCC9.3090208@cse.unsw.edu.au> <76bd70e30809170836t17a46227mf84c92e0fc80c8b3@mail.gmail.com> <215ff4410809180122o3141a5f5h6e93e092abf07fd1@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Cc: nfs@lists.sourceforge.net, Shehjar Tikoo To: "Chuck Lever" Return-path: Received: from neil.brown.name ([220.233.11.133]:57604 "EHLO neil.brown.name" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750876AbYISHkK (ORCPT ); Fri, 19 Sep 2008 03:40:10 -0400 Received: from brown by neil.brown.name with local (Exim 4.69) (envelope-from ) id 1Kgab1-0007Qf-DL for linux-nfs@vger.kernel.org; Fri, 19 Sep 2008 17:40:07 +1000 In-Reply-To: <215ff4410809180122o3141a5f5h6e93e092abf07fd1-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> Sender: linux-nfs-owner@vger.kernel.org List-ID: Hi, > I'm going to try jumbo frames but it'll take me a while to set it up. > I'll get back to you with the results. > Meanwhile I've been thinking about this. Please excuse my ignorance. Jumbo frames are changes at ethernet level2 but nfs is at ip level3. right? If I've been getting reasonable results using async, doesn't this indicate that my ethernet network is fast enough already? How will Jumbo frames help to solve the 'sync' issue? Thanks. Chris. > Thanks. > Chris. > > On Wed, Sep 17, 2008 at 5:36 PM, Chuck Lever wrote: >> On Wed, Sep 17, 2008 at 5:32 AM, Shehjar Tikoo wrote: >>>> If I change the export to async, it improves a lot. >>> If you can assure uninterrupted power to the server, I dont see any >>> reason why you cant use the "async" option. >> >> If the server O/S crashes due to a bug, you are still open to silent >> data corruption. A UPS cannot help you with that. >> >> -- >> Chuck Lever >> > ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs _______________________________________________ Please note that nfs@lists.sourceforge.net is being discontinued. Please subscribe to linux-nfs@vger.kernel.org instead. http://vger.kernel.org/vger-lists.html#linux-nfs