On Tuesday 14 November 2000 03:43 pm, Peter Ruskin wrote:
> Who said that the Promise Ultra100 card wasn't supported by
> Linux-Mandrake? It works a treat on my machine, with kernel
> 2.2.17-0.24mdk and 2.2.17-21mdk.  With 2.2.17-0.24mdk, I have to
> append "ide2=0xd400,0xd802 ide3=0xdc00,0xe002" to lilo, but
> 2.2.17-21mdk doesn't need it.  "Autotune" in lilo will make it hang
> on partition check during boot.  I don't use any drive optimisations.
..                                      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   You should
/dev/hda:
 Timing buffer-cache reads:   128 MB in  0.81 seconds =158.02 MB/sec
 Timing buffered disk reads:  64 MB in  2.88 seconds = 22.22 MB/sec 

   that's an IDE ata/33 drive plugged into a cheap BX board ;p
/dev/hda:
 multcount    = 16 (on)
 I/O support  =  1 (32-bit)
 unmaskirq    =  1 (on)
 using_dma    =  1 (on)
 keepsettings =  1 (on)
 nowerr       =  0 (off)
 readonly     =  0 (off)
 readahead    = 128 (on)                                        
-- 
Tom Brinkman       [EMAIL PROTECTED]     Galveston Bay

>
> Extract from dmesg ...
> PDC20267: IDE controller on PCI bus 00 dev 40
> PDC20267: chipset revision 2
> PDC20267: not 100% native mode: will probe irqs later
> PDC20267: ROM enabled at 0xea000000
> PDC20267: (U)DMA Burst Bit ENABLED Primary PCI Mode Secondary PCI
> Mode. PDC20267: FORCING PRIMARY MODE BIT 0x00 -> 0x01 MASTER
> PDC20267: FORCING SECONDARY MODE BIT 0x00 -> 0x01 MASTER
>     ide2: BM-DMA at 0xe400-0xe407, BIOS settings: hde:DMA, hdf:DMA
>     ide3: BM-DMA at 0xe408-0xe40f, BIOS settings: hdg:DMA, hdh:DMA
> hde: Maxtor 54098H8, ATA DISK drive
> hdf: Maxtor 54098U8, ATA DISK drive
> hdg: Maxtor 91020D6, ATA DISK drive
> hdh: Maxtor 88400D8, ATA DISK drive
> ide2 at 0xd400-0xd407,0xd802 on irq 15
> ide3 at 0xdc00-0xdc07,0xe002 on irq 15
> # Actually, 54098H8 is a UDMA100 drive - for some reason kernel
> thinks # it's a 33 - but it goes pretty fast - not as fast as the 66
> though. hde: Maxtor 54098H8, 39082MB w/2048kB Cache, CHS=79406/16/63,
> UDMA(33) hdf: Maxtor 54098U8, 39082MB w/2048kB Cache,
> CHS=79406/16/63, UDMA(66) hdg: Maxtor 91020D6, 9728MB w/256kB Cache,
> CHS=19765/16/63, UDMA(33) hdh: Maxtor 88400D8, 8011MB w/256kB Cache,
> CHS=16278/16/63, UDMA(33)
>
> Test results (/dev/sda is an IBM UttraSCSI) ...
> # hdparm -t /dev/hde
> /dev/hde:
>  Timing buffered disk reads:  64 MB in  3.47 seconds = 18.44 MB/sec
>
> # hdparm -t /dev/hdf
> /dev/hdf:
>  Timing buffered disk reads:  64 MB in  2.34 seconds = 27.35 MB/sec
>
> # hdparm -t /dev/hdg
> /dev/hdg:
>  Timing buffered disk reads:  64 MB in  5.22 seconds = 12.26 MB/sec
>
> # hdparm -t /dev/hdh
> /dev/hdh:
>  Timing buffered disk reads:  64 MB in  5.74 seconds = 11.15 MB/sec
>
> # hdparm -t /dev/sda
> /dev/sda:
>  Timing buffered disk reads:  64 MB in  7.76 seconds =  8.25 MB/sec


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