Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 21 Jun 2002 20:17:26 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 21 Jun 2002 20:17:25 -0400 Received: from klaatu.zianet.com ([204.134.124.201]:18821 "HELO zianet.com") by vger.kernel.org with SMTP id ; Fri, 21 Jun 2002 20:17:23 -0400 Message-ID: <3D13C2A8.6020007@zianet.com> Date: Fri, 21 Jun 2002 18:19:52 -0600 From: kwijibo@zianet.com User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.0.0) Gecko/20020529 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Duc Vianney CC: Andrew Morton , mgross , "Griffiths, Richard A" , Jens Axboe , Linux Kernel Mailing List , lse-tech@lists.sourceforge.net Subject: Re: [Lse-tech] Re: ext3 performance bottleneck as the number of spindles gets large References: <3D13A2B4.236E55DD@us.ibm.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3471 Lines: 90 This web site may be of interest for this discussion: http://labs.zianet.com. I have benchmarks using NFS with ext3 there. It also compares ext3 with ReiserFS. The page is not quite complete but it has the benchmarks up. Steven Duc Vianney wrote: >Andrew Morton wrote: > > >>If you have time, please test ext2 and/or reiserfs and/or ext3 >>in writeback mode. >> >> >I ran IOzone on ext2fs, ext3fs, JFS, and Reiserfs on an SMP 4-way >500MHz, 2.5GB RAM, two 9.1GB SCSI drives. The test partition is 1GB, >test file size is 128MB, test block size is 4KB, and IO threads varies >from 1 to 6. When comparing with other file system for this test >environment, the results on a 2.5.19 SMP kernel show ext3fs is having >performance problem with Writes and in particularly, with Random Write. >I think the BKL contention patch would help ext3fs, but I need to verify >it first. > >The following data are throughput in MB/sec obtained from IOzone >benchmark running on all file systems installed with default options. > > >Kernels 2519smp4 2519smp4 2519smp4 2519smp4 >No of threads=1 ext2-1t jfs-1t ext3-1t reiserfs-1t > >Initial write 138010 111023 29808 48170 >Rewrite 205736 204538 119543 142765 >Read 236500 237235 231860 236959 >Re-read 242927 243577 240284 242776 >Random read 204292 206010 201664 207219 >Random write 180144 180461 1090 121676 > >No of threads=2 ext2-2t jfs-2t ext3-2t reiserfs-2t > >Initial write 196477 143395 62248 55260 >Rewrite 261641 261441 126604 205076 >Read 292566 292796 313562 291434 >Re-read 302239 306423 341416 303424 >Random read 296152 295430 316966 288584 >Random write 253026 251013 958 203358 > >No of threads=4 ext2-4t jfs-4t ext3-4t reiserfs-4t > >Initial write 79513 172302 42051 48782 >Rewrite 256568 269840 124912 231395 >Read 290599 303669 327066 283793 >Re-read 289578 303644 327362 287531 >Random read 354011 353455 353806 351671 >Random write 279704 279922 2482 250498 > >No of threads=6 ext2-6t jfs-6t ext3-6t reiserfs-6t > >Initial write 98559 69825 59728 15576 >Rewrite 274993 286987 126048 232193 >Read 330522 326143 332147 326163 >Re-read 339672 328890 333094 326725 >Random read 348059 346154 347901 344927 >Random write 281613 280213 3659 227579 > >Cheers, >Duc J Vianney, dvianney@us.ibm.com >home page: http://www-124.ibm.com/developerworks/opensource/linuxperf/ >project page: http://www-124.ibm.com/developerworks/projects/linuxperf > > >- >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/ > > > > - 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/