Messages in this thread |  | | Date | Tue, 6 Nov 2001 03:54:52 +0800 | From | Mike Maravillo <> | Subject | Re: Poor IDE performance with VIA MVP3 |
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On Mon, Nov 05, 2001 at 11:42:43AM -0600, Ryan Hayle wrote: > On Mon, 05 Nov, 2001 at 04:12:00PM +0000, vda wrote: > > Are you saying that hdparm -T -t is yielding wildly varying results? > > Looks similar to failing hd symptoms or bug in IDE layer causing retries > > after error/timeout. What's in the logs? > > hdparm -T (buffer-cache reads) gives good numbers, 43v69 M/sec just > now. But that's only mesuring reading from the drive's 2M cache (I > believe?). It is the hdparm -t test (buffered disk reads) that is the > problem. As I said, I don't receive any errors or retries > whatsoever. Everything seems to be working perfectly, just very, very > slow... > > > Well, I had problems with drives refusing to do [u]dma. > > On my home machine I found out that compiling kernel with support for VIA > > chipset allowed udma to work ok (hdparm -T -t = ~20mb/s). Without that > > support, my hd was stuck in pio, ~6mb/s. > > That's the thing--it claims to be in UDMA mode, and again I get no > errors. Even when I do 'hdparm -d1 -X66 /dev/hda", everything works fine, > without errors, only the speed problems persist. Oh, and I have compiled > my kernel with VIA IDE support, it makes no difference in the performance. > > It's sounding more and more like this isn't a driver/chipset problem, but > something wrong with the HD itself. Thanks for your insight.
This has been a long-standing problem with my system as well. I have an MS-5187 VIA MVP4 board and ST320413A UltraATA/100 drive.
Timing buffer-cache reads: 128 MB in 4.40 seconds = 29.09 MB/sec Timing buffered disk reads: 64 MB in 13.06 seconds = 4.90 MB/sec
Model=ST320413A, FwRev=3.39, SerialNo=7ED05MNS Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% } RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=0 BuffType=unknown, BuffSize=512kB, MaxMultSect=16, MultSect=off CurCHS=16383/16/63, CurSects=-66060037, LBA=yes, LBAsects=39102336 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=no Drive Supports : Reserved : ATA-1 ATA-2 ATA-3 ATA-4
I remember trying out the drive on a Soltek 75KAV and got better buffered disk results, ~25.0 MB/sec.
-- .--. Michael J. Maravillo office://+63.2.894.3592/ ( () ) Q Linux Solutions, Inc. mobile://+63.917.897.0919/ `--\\ A Philippine Open Source Solutions Co. http://www.q-linux.com/ - 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/
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