Messages in this thread | | | Date | Wed, 24 Jan 2001 08:13:38 -0800 | From | Miles Lane <> | Subject | Re: 2.4 disk speed 66% slowdown... |
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Benson Chow wrote:
> Just as a datapoint, my Via IDE chipset (on atb850/kt133) and Promise > Ultra66 (on 2xpp200/82440FX/PIIX3) works fine with 2.4.0, getting speeds > about correct:
<snip>
> Model=QUANTUM FIREBALLP LM30, FwRev=A35.0700 > [snip. unused info cut] > tDMA={min:120,rec:120}, DMA modes: mword0 mword1 mword2 > IORDY=on/off, tPIO={min:120,w/IORDY:120}, PIO modes: mode3 mode4 > UDMA modes: mode0 mode1 mode2 mode3 *mode4 > > Timing buffered disk reads: 64 MB in 4.30 seconds = 14.88 MB/sec > Timing buffered disk reads: 64 MB in 4.34 seconds = 14.75 MB/sec
Hi,
I have the same drive, but "hdparm -i" gives different output:
Model=QUANTUM FIREBALLP LM30, FwRev=A35.0700, SerialNo=186006831114 Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs } RawCHS=16383/16/63, TrkSize=32256, SectSize=21298, ECCbytes=4 BuffType=DualPortCache, BuffSize=1900kB, MaxMultSect=16, MultSect=off CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=58633344 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
There is no mention of "UDMA modes."
However, my throughput seems to be much faster than yours for some reason:
Timing buffer-cache reads: 128 MB in 0.91 seconds =140.66 MB/sec Timing buffered disk reads: 64 MB in 2.49 seconds = 25.70 MB/sec
My machine is an Athlon (booting says "Detected 848.381 MHz processor"). I'm not sure what the system bus speed is, but I think it's ~100MHz.
00:01.0 PCI bridge: Advanced Micro Devices [AMD] AMD-751 [Irongate] AGP Bridge (rev 01) (prog-if 00 [Normal decode]) Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- Status: Cap- 66Mhz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 64 Bus: primary=00, secondary=01, subordinate=01, sec-latency=64 I/O behind bridge: 0000e000-0000efff Memory behind bridge: fca00000-feafffff Prefetchable memory behind bridge: e4800000-f48fffff BridgeCtl: Parity- SERR+ NoISA- VGA+ MAbort- >Reset- FastB2B-
00:07.1 IDE interface: Advanced Micro Devices [AMD] AMD-756 [Viper] IDE (rev 03) (prog-if 8a [Master SecP PriP]) Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 64 Region 4: I/O ports at cb00 [size=16]
CONFIG_BLK_DEV_IDEPCI=y CONFIG_IDEPCI_SHARE_IRQ=y CONFIG_BLK_DEV_IDEDMA_PCI=y CONFIG_IDEDMA_PCI_AUTO=y CONFIG_BLK_DEV_IDEDMA=y CONFIG_BLK_DEV_AMD7409=y CONFIG_IDEDMA_AUTO=y CONFIG_BLK_DEV_IDE_MODES=y
Cheers,
Miles
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