From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 19 Nov 2002 22:24:43 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 19 Nov 2002 22:24:42 -0500 Received: from mail-02.iinet.net.au ([203.59.3.34]:45832 "HELO mail.iinet.net.au") by vger.kernel.org with SMTP id ; Tue, 19 Nov 2002 22:24:41 -0500 Message-ID: <3DDAF40B.9000002@iinet.net.au> Date: Wed, 20 Nov 2002 13:31:39 +1100 From: Nero User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.2b) Gecko/20021016 X-Accept-Language: en-us, en MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: IDE performance slowdown in 2.5 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 With 2.5.47, I get 22mb/s using hdparm -t /dev/hda, and close to 40mb/s when running 2.4.x Is this at all expected? Info from hdparm: [13:19:08] root@debian:/proc# hdparm -v /dev/hda /dev/hda: multcount = 0 (off) IO_support = 1 (32-bit) unmaskirq = 1 (on) using_dma = 1 (on) keepsettings = 0 (off) readonly = 0 (off) readahead = 256 (on) geometry = 50765/16/63, sectors = 117231408, start = 0 [13:18:51] root@debian:/proc# hdparm -i /dev/hda /dev/hda: Model=ST360021A, FwRev=3.05, SerialNo=3HR01F5W Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% } RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4 BuffType=unknown, BuffSize=2048kB, MaxMultSect=16, MultSect=off CurCHS=4047/16/255, CurSects=16511760, LBA=yes, LBAsects=117231408 IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120} PIO modes: pio0 pio1 pio2 pio3 pio4 DMA modes: mdma0 mdma1 mdma2 UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5 AdvancedPM=no WriteCache=enabled Drive conforms to: device does not report version: 1 2 3 4 5 Info from dmesg: ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx VP_IDE: IDE controller at PCI slot 00:07.1 VP_IDE: chipset revision 6 VP_IDE: not 100% native mode: will probe irqs later ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx VP_IDE: VIA vt82c686b (rev 40) IDE UDMA100 controller on pci00:07.1 ide0: BM-DMA at 0xd000-0xd007, BIOS settings: hda:DMA, hdb:pio ide1: BM-DMA at 0xd008-0xd00f, BIOS settings: hdc:DMA, hdd:DMA hda: C/H/S=28733/16/255 from BIOS ignored hda: ST360021A, ATA DISK drive hda: DMA disabled ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 hdc: RICOH CD-R/RW MP7163A, ATAPI CD/DVD-ROM drive hdd: CD-ROM 32X/AKU, ATAPI CD/DVD-ROM drive hdc: DMA disabled hdd: DMA disabled ide1 at 0x170-0x177,0x376 on irq 15 hda: host protected area => 1 hda: 117231408 sectors (60022 MB) w/2048KiB Cache, CHS=116301/16/63, UDMA(100) hda: hda1 < hda5 > hda2 hda3 hdc: ATAPI 32X CD-ROM CD-R/RW drive, 2048kB Cache, DMA (Why does it say DMA disabled there [for hda], yet hdparm says its enabled? I checked that there is no init script changing settings on the drives.)