Return-Path: Received: from mx144.netapp.com ([216.240.21.25]:27288 "EHLO mx144.netapp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752493AbbCQMa1 (ORCPT ); Tue, 17 Mar 2015 08:30:27 -0400 Message-ID: <55081E60.9010200@Netapp.com> Date: Tue, 17 Mar 2015 08:30:24 -0400 From: Anna Schumaker MIME-Version: 1.0 To: Christoph Hellwig CC: , Subject: Re: [PATCH v3 0/5] NFS: Add READ_PLUS support References: <1426540666-31896-1-git-send-email-Anna.Schumaker@Netapp.com> <20150317103145.GA27478@infradead.org> In-Reply-To: <20150317103145.GA27478@infradead.org> Content-Type: text/plain; charset="utf-8" Sender: linux-nfs-owner@vger.kernel.org List-ID: On 03/17/2015 06:31 AM, Christoph Hellwig wrote: > On Mon, Mar 16, 2015 at 05:17:41PM -0400, Anna Schumaker wrote: >> Test | v4.1 | no READ_PLUS | READ_PLUS >> --------------------------------------------------- >> generic/013 | 135s | 143s | 123s >> generic/075 | 4s | 11s | 4s >> generic/091 | 9s | 16s | 15s >> generic/112 | 4s | 7s | 6s >> generic/127 | 62s | 117s | 114s >> generic/213 | [not run] | 1s | 1s >> generic/214 | [not run] | 0s | 0s >> generic/228 | [not run] | 1s | 2s >> generic/236 | 1s | 1s | 1s >> generic/263 | 4s | 6s | 8s >> generic/285 | 0s | 1s | 3s >> generic/315 | [not run] | 2s | 1s >> --------------------------------------------------- >> Total | 3:47.47 | 5:11.85 | 4:43.77 > > So why is 4.2 generally slower than 4.1? I guess we really should look > into that first. > I did! There are several tests that run on v4.1 but skip over fallocate() calls. v4.2 no longer skips these tests.