Messages in this thread | | | Date | Wed, 20 Nov 2002 13:44:12 +1100 | From | Nero <> | Subject | Re: IDE performance slowdown in 2.5 |
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Nero wrote:
> 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.)
Forgot to mention, the filesystem is ReiserFS 3.
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