Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261666AbVC2Xht (ORCPT ); Tue, 29 Mar 2005 18:37:49 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261656AbVC2Xht (ORCPT ); Tue, 29 Mar 2005 18:37:49 -0500 Received: from viper.oldcity.dca.net ([216.158.38.4]:6531 "HELO viper.oldcity.dca.net") by vger.kernel.org with SMTP id S261649AbVC2Xh3 (ORCPT ); Tue, 29 Mar 2005 18:37:29 -0500 Subject: Re: NFS client latencies From: Lee Revell To: Trond Myklebust Cc: Ingo Molnar , linux-kernel In-Reply-To: <1112139263.11892.0.camel@lade.trondhjem.org> References: <1112137487.5386.33.camel@mindpipe> <1112138283.11346.2.camel@lade.trondhjem.org> <1112139155.5386.35.camel@mindpipe> <1112139263.11892.0.camel@lade.trondhjem.org> Content-Type: text/plain Date: Tue, 29 Mar 2005 18:37:24 -0500 Message-Id: <1112139444.5386.39.camel@mindpipe> Mime-Version: 1.0 X-Mailer: Evolution 2.2.1.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 887 Lines: 26 On Tue, 2005-03-29 at 18:34 -0500, Trond Myklebust wrote: > ty den 29.03.2005 Klokka 18:32 (-0500) skreiv Lee Revell: > > On Tue, 2005-03-29 at 18:18 -0500, Trond Myklebust wrote: > > > ty den 29.03.2005 Klokka 18:04 (-0500) skreiv Lee Revell: > > > > I am seeing long latencies in the NFS client code. Attached is a ~1.9 > > > > ms latency trace. > > > > > > What kind of workload are you using to produce these numbers? > > > > > > > Just a kernel compile over NFS. > > In other words a workload consisting mainly of mmap()ed writes? > If you say so... I don't know the NFS internals very well. I did use "make -j16", on a UP. Lee - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/