Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 28 Feb 2002 15:06:25 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 28 Feb 2002 15:01:51 -0500 Received: from mail.starbak.net ([63.144.91.12]:17670 "EHLO mail.starbak.net") by vger.kernel.org with ESMTP id ; Thu, 28 Feb 2002 14:59:01 -0500 Message-ID: <006401c1c091$d721ec00$5a5b903f@h90> From: "Joseph Malicki" To: "Bharath Krishnan" , In-Reply-To: <1014914087.3274.22.camel@wavelets.mit.edu> Subject: Re: Yet another disk transfer speed problem Date: Thu, 28 Feb 2002 14:55:15 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Have you considered that perhaps one of your drives is just faster than the other? This happens. -joe ----- Original Message ----- From: "Bharath Krishnan" To: Sent: Thursday, February 28, 2002 11:34 AM Subject: Yet another disk transfer speed problem > Hello! > > Please CC: me on replies, > > Problem: ata disk on secondary controller of PDC20265 > gives sub-par performance. > > both disks have c3 and d1 set along with X69. > > hdparm -tT /dev/hdg: > /dev/hdg: > Timing buffer-cache reads: 128 MB in 0.77 seconds =166.23 MB/sec > Timing buffered disk reads: 64 MB in 3.81 seconds = 16.80 MB/sec > > compared to > hdparm -tT /dev/hde: > /dev/hde: > Timing buffer-cache reads: 128 MB in 0.73 seconds =175.34 MB/sec > Timing buffered disk reads: 64 MB in 1.82 seconds = 35.16 MB/sec > > > Setup: > kernel: 2.4.17 > pdc20265 controller on asus a7v motherboard. > kernel config options: > CONFIG_BLK_DEV_PDC202XX=y > CONFIG_PDC202XX_BURST=y > # CONFIG_PDC202XX_FORCE is not set > # CONFIG_BLK_DEV_ATARAID_PDC is not set > > similar behavior with redhat 7.2 updated kernel 2.4.9-21 > > hde: IBM-DTLA-307015, ATA DISK drive > hdg: MAXTOR 6L040J2, ATA DISK drive > > Interesting stuff from dmesg: > ide2: BM-DMA at 0x8000-0x8007, BIOS settings: hde:DMA, hdf:pio > ide3: BM-DMA at 0x8008-0x800f, BIOS settings: hdg:DMA, hdh:pio > > cat /proc/ide/ide2/config > pci bus 00 device 88 vid 105a did 0d30 channel 0 > 5a 10 30 0d 07 00 10 02 02 00 80 01 00 20 00 00 > 01 94 00 00 01 90 00 00 01 88 00 00 01 84 00 00 > 01 80 00 00 00 00 00 d4 00 00 00 00 5a 10 33 4d > 00 00 00 00 58 00 00 00 00 00 00 00 0a 01 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > be 33 00 00 00 00 00 00 01 00 01 00 00 00 00 00 > f1 24 41 00 c4 f3 4f 00 f1 24 41 00 c4 f3 4f 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > > cat /proc/ide/ide3/config > pci bus 00 device 88 vid 105a did 0d30 channel 1 > 5a 10 30 0d 07 00 10 02 02 00 80 01 00 20 00 00 > 01 94 00 00 01 90 00 00 01 88 00 00 01 84 00 00 > 01 80 00 00 00 00 00 d4 00 00 00 00 5a 10 33 4d > 00 00 00 00 58 00 00 00 00 00 00 00 0a 01 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > be 33 00 00 00 00 00 00 01 00 01 00 00 00 00 00 > f1 24 41 00 c4 f3 4f 00 f1 24 41 00 c4 f3 4f 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > > hdparm -i > /dev/hde > Model=IBM-DTLA-307015, FwRev=TX2OA50C, SerialNo=YF0YFFX4393 > Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs } > RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=40 > BuffType=DualPortCache, BuffSize=1916kB, MaxMultSect=16, MultSect=16 > CurCHS=16383/16/63, CurSects=-66060037, LBA=yes, LBAsects=30003120 > 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 udma0 udma1 udma2 udma3 udma4 *udma5 > AdvancedPM=yes: disabled (255) > Drive Supports : ATA/ATAPI-5 T13 1321D revision 1 : ATA-2 ATA-3 ATA-4 > ATA-5 > > /dev/hdg > Model=MAXTOR 6L040J2, FwRev=A93.0300, SerialNo=662125114610 > Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs } > RawCHS=16383/16/63, TrkSize=32256, SectSize=21298, ECCbytes=4 > BuffType=DualPortCache, BuffSize=1820kB, MaxMultSect=16, MultSect=16 > CurCHS=16383/16/63, CurSects=-66060037, LBA=yes, LBAsects=78177792 > 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 udma6 > AdvancedPM=no > Drive Supports : ATA/ATAPI-5 T13 1321D revision 1 : ATA-1 ATA-2 ATA-3 > ATA-4 ATA-5 > > cat /proc/ide/pdc202xx > PDC20265 Chipset. > ------------------------------- General Status > ---------------------------------Burst Mode : > enabled > Host Mode : Normal > Bus Clocking : 33 PCI Internal > IO pad select : 10 mA > Status Polling Period : 8 > Interrupt Check Status Polling Delay : 11 > --------------- Primary Channel ---------------- Secondary Channel ---- > enabled enabled > 66 Clocking enabled enabled > Mode PCI Mode PCI > FIFO Empty FIFO Empty > --------------- drive0 --------- drive1 -------- drive0 ---------- > drive1 -DMA enabled: yes no > yes no > DMA Mode: UDMA 4 NOTSET UDMA 4 > NOTSET > PIO Mode: PIO 4 NOTSET PIO 4 > NOTSET > > > What is going on? I do have ata100 cables. > > Thanks, > > -bharath > - > 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/