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SubjectRe: Disk very slow with VIA KT400 in 2.4.18 (stock RedHat 8.0)
Other people know substantially more about this than I do, but there 
were a number of fixes for KT400 problems, especially IDE in recent
kernels. I would give 4.2.21-pre3 or 4.2.21-pre3-ac4 a try. I've used
both of those with relatively few problems on a KT400 machine.

-Tupshin

Simon Posnjak wrote:

>Hi all,
>
>I have a Kudoz 7x board (VIA KT400 (VT8377 and VT8235)) and a WD 80 GB
>disk (7200, UDMA (http://www.wdc.com/products/Products.asp?DriveID=32)).
>
>The problem is that disk operations are rally slow. Copying files goes
>on with 1 MB/sec.
>
>At start up kernel complained:
>
>VP_IDE: IDE controller on PCI bus 00 dev 89
>PCI: No IRQ known for interrupt pin A of device 00:11.1. Please try using pci=biosirq.
>VP_IDE: chipset revision 6
>
>So I added pci=biosirq to kernel parameters at boot. An then I got:
>
>Uniform Multi-Platform E-IDE driver Revision: 6.31
>ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
>VP_IDE: IDE controller on PCI bus 00 dev 89
>PCI: No IRQ known for interrupt pin A of device 00:11.1.
>VP_IDE: chipset revision 6
>VP_IDE: not 100% native mode: will probe irqs later
>VP_IDE: VIA vt8235 (rev 00) IDE UDMA133 controller on pci00:11.1
> ide0: BM-DMA at 0xe400-0xe407, BIOS settings: hda:DMA, hdb:pio
> ide1: BM-DMA at 0xe408-0xe40f, BIOS settings: hdc:DMA, hdd:DMA
>hda: WDC WD800JB-00CRA1, ATA DISK drive
>hdc: SAMSUNG CD-R/RW SW-216B BS05 20010727, ATAPI CD/DVD-ROM drive
>hdd: SAMSUNG CD-ROM SC-152L, ATAPI CD/DVD-ROM drive
>ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
>ide1 at 0x170-0x177,0x376 on irq 15
>hda: 156301488 sectors (80026 MB) w/8192KiB Cache, CHS=9729/255/63, UDMA(100)
>
>hdparm says:
>
>/dev/hda:
> multcount = 16 (on)
> IO_support = 1 (32-bit)
> unmaskirq = 1 (on)
> using_dma = 1 (on)
> keepsettings = 0 (off)
> readonly = 0 (off)
> readahead = 8 (on)
> geometry = 9729/255/63, sectors = 156301488, start = 0
>
>hdparm -iI /dev/hda
>
>/dev/hda:
>
> Model=WDC WD800JB-00CRA1, FwRev=17.07W17, SerialNo=WD-WCA8E5325146
> Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq }
> RawCHS=16383/16/63, TrkSize=57600, SectSize=600, ECCbytes=40
> BuffType=DualPortCache, BuffSize=8192kB, MaxMultSect=16, MultSect=16
> CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=156301488
> 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
> 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
>
>
>ATA device, with non-removable media
> Model Number: WDC WD800JB-00CRA1
> Serial Number: WD-WCA8E5325146
> Firmware Revision: 17.07W17
>Standards:
> Supported: 5 4 3 2
> Likely used: 6
>Configuration:
> Logical max current
> cylinders 16383 16383
> heads 16 16
> sectors/track 63 63
> --
> CHS current addressable sectors: 16514064
> LBA user addressable sectors: 156301488
> device size with M = 1024*1024: 76319 MBytes
> device size with M = 1000*1000: 80026 MBytes (80 GB)
>Capabilities:
> LBA, IORDY(can be disabled)
> bytes avail on r/w long: 40 Queue depth: 1
> Standby timer values: spec'd by Standard, with device specific minimum
> R/W multiple sector transfer: Max = 16 Current = 16
> Recommended acoustic management value: 128, current value: 254
> DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5
> Cycle time: min=120ns recommended=120ns
> PIO: pio0 pio1 pio2 pio3 pio4
> Cycle time: no flow control=120ns IORDY flow control=120ns
>Commands/features:
> Enabled Supported:
> * READ BUFFER cmd
> * WRITE BUFFER cmd
> * Host Protected Area feature set
> * Look-ahead
> * Write cache
> * Power Management feature set
> Security Mode feature set
> * SMART feature set
> * Device Configuration Overlay feature set
> Automatic Acoustic Management feature set
> SET MAX security extension
> * DOWNLOAD MICROCODE cmd
> * SMART self-test
> * SMART error logging
>Security:
> supported
> not enabled
> not locked
> not frozen
> not expired: security count
> not supported: enhanced erase
>HW reset results:
> CBLID- above Vih
> Device num = 0 determined by CSEL
>Checksum: correct
>
>lspci
>00:00.0 Host bridge: VIA Technologies, Inc.: Unknown device 3189
>00:01.0 PCI bridge: VIA Technologies, Inc.: Unknown device b168
>00:09.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
>00:0a.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
>00:0b.0 Multimedia video controller: Brooktree Corporation Bt878 Video Capture (rev 02)
>00:0b.1 Multimedia controller: Brooktree Corporation Bt878 Audio Capture (rev 02)
>00:10.0 USB Controller: VIA Technologies, Inc. USB (rev 80)
>00:10.1 USB Controller: VIA Technologies, Inc. USB (rev 80)
>00:10.2 USB Controller: VIA Technologies, Inc. USB (rev 80)
>00:10.3 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 82)
>00:11.0 ISA bridge: VIA Technologies, Inc. VT8233A ISA Bridge
>00:11.1 IDE interface: VIA Technologies, Inc. VT82C586B PIPC Bus Master IDE (rev 06)
>00:11.5 Multimedia audio controller: VIA Technologies, Inc. VT8233 AC97 Audio Controller (rev 50)
>01:00.0 VGA compatible controller: nVidia Corporation NV11 [GeForce2 MX] (rev b2)
>
>lspci -n
>00:00.0 Class 0600: 1106:3189
>00:01.0 Class 0604: 1106:b168
>00:09.0 Class 0200: 10ec:8139 (rev 10)
>00:0a.0 Class 0200: 10ec:8139 (rev 10)
>00:0b.0 Class 0400: 109e:036e (rev 02)
>00:0b.1 Class 0480: 109e:0878 (rev 02)
>00:10.0 Class 0c03: 1106:3038 (rev 80)
>00:10.1 Class 0c03: 1106:3038 (rev 80)
>00:10.2 Class 0c03: 1106:3038 (rev 80)
>00:10.3 Class 0c03: 1106:3104 (rev 82)
>00:11.0 Class 0601: 1106:3177
>00:11.1 Class 0101: 1106:0571 (rev 06)
>00:11.5 Class 0401: 1106:3059 (rev 50)
>01:00.0 Class 0300: 10de:0110 (rev b2)
>
>Im using RedHat 8.0 stock kernel (the updated version) 2.4.18-19.8.0.
>
> Regards Simon
>
>
>-
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