Return-Path: Received: from bombadil.infradead.org ([198.137.202.9]:44771 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932183AbbCQKby (ORCPT ); Tue, 17 Mar 2015 06:31:54 -0400 Date: Tue, 17 Mar 2015 03:31:45 -0700 From: Christoph Hellwig To: Anna Schumaker Cc: Trond.Myklebust@primarydata.com, linux-nfs@vger.kernel.org Subject: Re: [PATCH v3 0/5] NFS: Add READ_PLUS support Message-ID: <20150317103145.GA27478@infradead.org> References: <1426540666-31896-1-git-send-email-Anna.Schumaker@Netapp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <1426540666-31896-1-git-send-email-Anna.Schumaker@Netapp.com> Sender: linux-nfs-owner@vger.kernel.org List-ID: 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.