From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 3 Oct 2002 14:26:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 3 Oct 2002 14:26:18 -0400 Received: from mailout10.sul.t-online.com ([194.25.134.21]:55718 "EHLO mailout10.sul.t-online.com") by vger.kernel.org with ESMTP id ; Thu, 3 Oct 2002 14:26:17 -0400 Content-Type: text/plain; charset="us-ascii" From: Andreas Pfaller To: lkml Subject: linux-2.4.20-pre8-ac3: NFS performance regression Date: Thu, 3 Oct 2002 20:32:37 +0200 User-Agent: KMail/1.4.3 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Message-Id: <200210032024.47664.apfaller@yahoo.com.au> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org While trying to get the onboard HPT372 working on a new motherboard (Epox 8k5a2+ - KT333/VT8235) i tried successfully 2.4.20-pre8-ac3. 2.4.19 could read the fs on the HPT372 without any problem at full media speed but could not write to it at all. I can provide details if necessary. I did not use any of the raid stuff. However I noticed a significant NFS performance drop with 2.4.20-pre8-ac3. Other network throughput is not affected. Server: P-II 300, cheap RTL8139C, 2.4.19 (nearly vanilla). Client: Athlon 2000+, onboard via-rhine. ### Client with linux-2.4.19 ### [diavolo inferno-l2#> bonnie -s 1500 -S 100 -y -u Bonnie 1.3: File './Bonnie.976', size: 1572864000, volumes: 1 Writing with putc_unlocked()...done: 10328 kB/s 10.5 %CPU Rewriting... done: 4280 kB/s 3.2 %CPU Writing intelligently... done: 10319 kB/s 3.8 %CPU Reading with getc_unlocked()...done: 10436 kB/s 14.3 %CPU Reading intelligently... done: 10712 kB/s 2.8 %CPU Seeker 1...Seeker 2...Seeker 3...start 'em...done...done...done... ---Sequential Output (sync)----- ---Sequential Input-- --Rnd Seek- -CharUnlk- --Block--- -Rewrite-- -CharUnlk- --Block--- --00k (03)- Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU diavol 1*1500 10328 10.5 10319 3.8 4280 3.2 10436 14.3 10712 2.8 9.3 3.0 # ftp transfer 1072458941 bytes received in 01:37 (10.53 MB/s) ### Client with linux-2.4.20-pre8-ac3 ### [diavolo inferno-l2#> bonnie -s 1500 -S 100 -y -u Bonnie 1.3: File './Bonnie.987', size: 1572864000, volumes: 1 Writing with putc_unlocked()...done: 7356 kB/s 7.6 %CPU Rewriting... done: 3168 kB/s 1.3 %CPU Writing intelligently... done: 6939 kB/s 1.7 %CPU Reading with getc_unlocked()...done: 7389 kB/s 7.0 %CPU Reading intelligently... done: 7722 kB/s 2.1 %CPU Seeker 1...Seeker 3...Seeker 2...start 'em...done...done...done... ---Sequential Output (sync)----- ---Sequential Input-- --Rnd Seek- -CharUnlk- --Block--- -Rewrite-- -CharUnlk- --Block--- --00k (03)- Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU diavol 1*1500 7356 7.6 6939 1.7 3168 1.3 7389 7.0 7722 2.1 9.9 3.8 [diavolo inferno-l2#> cat /proc/mounts | grep l2 inferno:/mnt/l2 /mnt/inferno-l2 nfs rw,v3,rsize=8192,wsize=8192,hard,intr,udp,lock,addr=inferno 0 0 # ftp transfer 1072458941 bytes received in 01:35 (10.69 MB/s) Cheers, Andreas PS: Does a patch for only the HPT372 problem exist for 2.4.19? I get somewhat nervous running an pre-ac kernel on a machine intended for production use.