Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 6 Dec 2002 21:41:14 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 6 Dec 2002 21:41:14 -0500 Received: from gen3-newburypark5-192.vnnyca.adelphia.net ([207.175.226.192]:12279 "EHLO dave.home") by vger.kernel.org with ESMTP id ; Fri, 6 Dec 2002 21:41:13 -0500 Date: Fri, 6 Dec 2002 18:48:52 -0800 From: David Ashley Message-Id: <200212070248.gB72mqT13578@dave.home> To: linux-kernel@vger.kernel.org Subject: RE: 2.4.18 beats 2.5.50 in hard drive access???? Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3356 Lines: 90 Manish Lachwani (manish@Zambeel.com) Wrote: >Try to set UDMA0 by > >hdparm -X64 /dev/hda > >or UDMA 2 by using: > >hdparm -X66 /dev/hda > >OSB4 should support UDMA 2. If anyting > UDMA2, then IDE warning should >appear in dmesg hda=a cdrom drive, so I'll apply your advice to hdb: I tried X64, X66 and X67 and no change in performance, nor did any warning message appear in dmesg. For some reason my dmesg has a lot of these: bio too big device ide0(3,64) (256 > 255) bio too big device ide1(22,0) (256 > 255) bio too big device ide1(22,64) (256 > 255) bio too big device ide0(3,64) (256 > 255) bio too big device ide1(22,0) (256 > 255) bio too big device ide1(22,64) (256 > 255) bio too big device ide0(3,64) (256 > 255) bio too big device ide1(22,0) (256 > 255) bio too big device ide1(22,64) (256 > 255) bio too big device ide1(22,0) (256 > 255) bio too big device ide1(22,64) (256 > 255) bio too big device ide0(3,64) (256 > 255) bio too big device ide1(22,0) (256 > 255) > >CHeck the IDENTIFY information using hdparm -I /dev/hda to determine the >UDMA mode supported or /proc/ide/hda/identify, word# 88 root@test:/var/log# hdparm -I /dev/hdb /dev/hdb: Model=DW CDW08B0-B00AC1A , FwRev=710.W771, SerialNo=DWW-AME8943535 Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq } RawCHS=16383/16/63, TrkSize=57600, SectSize=600, ECCbytes=40 BuffType=DualPortCache, BuffSize=2048kB, MaxMultSect=16, MultSect=16 CurCHS=17475/15/63, CurSects=-78446341, LBA=yes, LBAsects=156301488 IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120} PIO modes: pio0 pio1 pio2 pio3 pio4 DMA modes: mdma0 mdma1 *mdma2 udma0 udma1 udma2 udma3 udma4 udma5 AdvancedPM=no Drive Supports : Reserved : ATA-1 ATA-2 ATA-3 ATA-4 ATA-5 root@test:/proc/ide/hdb# cat identify 427a 3fff 0000 0010 e100 0258 003f 0010 0000 000e 5744 2d57 4d41 3845 3439 3533 3533 3900 0000 0000 0003 1000 0028 3137 2e30 3757 3137 5744 4320 5744 3830 3042 422d 3030 4341 4131 2020 2020 2020 2020 2020 2020 2020 2020 2020 2020 2020 8010 0000 2f00 4001 0280 0000 0007 4443 000f 003f fb53 00fb 0110 f8b0 0950 0000 0407 0003 0078 0078 0078 0078 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 003e 0000 346b 4b01 4003 3469 0801 4003 003f 0000 0000 0000 0000 6d00 80fe 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0001 0000 0000 0000 0000 002d 0000 0000 0000 0000 0000 0000 0000 0000 0000 0001 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 001e 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 b7a5 -Dave - 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/