Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 28 Feb 2002 15:09:49 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 28 Feb 2002 15:08:32 -0500 Received: from WAVELETS.MIT.EDU ([18.58.2.230]:19116 "EHLO wavelets.mit.edu") by vger.kernel.org with ESMTP id ; Thu, 28 Feb 2002 15:06:42 -0500 Subject: Re: Yet another disk transfer speed problem From: Bharath Krishnan To: Joseph Malicki Cc: linux-kernel@vger.kernel.org In-Reply-To: <006401c1c091$d721ec00$5a5b903f@h90> In-Reply-To: <1014914087.3274.22.camel@wavelets.mit.edu> <006401c1c091$d721ec00$5a5b903f@h90> Content-Type: text/plain Content-Transfer-Encoding: 7bit X-Mailer: Evolution/1.0.2 (1.0.2-0.7x) Date: 28 Feb 2002 15:06:41 -0500 Message-Id: <1014926801.3274.40.camel@wavelets.mit.edu> Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi, I would expect the disk which acts slower(maxtor) to be atleast as fast as the other one (ibm). reasons: 1. Both are 7200RPM 2. The slower one(maxtor hdg) is one of the newer ata133 disks while that faster one is ata100(ibm hde). I would expect atleast equal performance from both. Thanks, -bharath On Thu, 2002-02-28 at 14:55, Joseph Malicki wrote: > 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/