Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 31 Dec 2001 09:08:33 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 31 Dec 2001 09:08:24 -0500 Received: from astound-64-85-224-253.ca.astound.net ([64.85.224.253]:47368 "EHLO master.linux-ide.org") by vger.kernel.org with ESMTP id ; Mon, 31 Dec 2001 09:08:03 -0500 Date: Mon, 31 Dec 2001 06:05:57 -0800 (PST) From: Andre Hedrick To: linux-kernel@vger.kernel.org cc: linux-raid@vger.kernel.org Subject: ATA RAID-0 FYI-Did the Impossible. Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org TIOBENCH No size specified, using 1792 MB Size is MB, BlkSz is Bytes, Read, Write, and Seeks are MB/sec File Block Num Seq Read Rand Read Seq Write Rand Write Dir Size Size Thr Rate (CPU%) Rate (CPU%) Rate (CPU%) Rate (CPU%) ------- ------ ------- --- ----------- ----------- ----------- ----------- . 1792 4096 1 153.6 98.1% 0.897 0.91% 85.59 51.2% 3.399 1.95% . 1792 4096 2 104.7 67.8% 1.080 1.00% 79.63 58.4% 3.437 3.29% . 1792 4096 4 91.57 61.2% 1.292 1.24% 76.45 59.3% 3.471 3.40% . 1792 4096 8 83.55 57.3% 1.480 1.39% 73.80 59.2% 3.455 3.26% File './Bonnie.1089', size: 1073741824, volumes: 1 Writing with putc()... done: 9854 kB/s 100.0 %CPU Rewriting... done: 65537 kB/s 52.2 %CPU Writing intelligently...done: 109124 kB/s 51.0 %CPU Reading with getc()... done: 9821 kB/s 99.9 %CPU Reading intelligently...done: 167240 kB/s 97.6 %CPU Seeker 1...Seeker 2...Seeker 3...start 'em...done...done...done... ---Sequential Output (nosync)--- ---Sequential Input-- --Rnd Seek- -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --04k (03)- Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU 1*1024 9854 100.0 109124 51.0 65537 52.2 9821 99.9 167240 97.6 1504.4 6.4 hdparm -t /dev/md0 /dev/md0: Timing buffered disk reads: 64 MB in 0.47 seconds =136.17 MB/sec hde: 39102336 sectors (20020 MB) w/2048KiB Cache, CHS=38792/16/63, UDMA(100) hdg: 39102336 sectors (20020 MB) w/2048KiB Cache, CHS=38792/16/63, UDMA(100) hdi: 39102336 sectors (20020 MB) w/2048KiB Cache, CHS=38792/16/63, UDMA(100) hdk: 39102336 sectors (20020 MB) w/2048KiB Cache, CHS=38792/16/63, UDMA(100) /etc/raidtab raiddev /dev/md0 raid-level 0 nr-raid-disks 4 persistent-superblock 0 chunk-size device /dev/hd1 raid-disk 0 device /dev/hd1 raid-disk 1 device /dev/hd1 raid-disk 2 device /dev/hd1 raid-disk 3 If you want your system to have this kind of performance, that raise hell to get the patches adopted into the main kernel. Regards, Andre Hedrick CEO/President, LAD Storage Consulting Group Linux ATA Development Linux Disk Certification Project - 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/