UDMA on Dell Inspiron 8000

[Brian J. Conway]

Greetings, I've been running Mandrake 8.0 on a new Dell Inspiron 8000 for
the past two weeks, and I was curious whether there's any reason that
autodma doesn't work for the IBM drive included with it, or whether it's
just a matter of not having a trusted/recognized IDE controller/drive
combination.  I'm running 2.4.6-pre2, and enabling DMA manually works
great and performance is improved drastically (of course).  Here's the
relevant portions of dmesg:

Uniform Multi-Platform E-IDE driver Revision: 6.31
ide: Assuming 33MHz system bus speed for PIO modes; override with
idebus=xx
PCI_IDE: unknown IDE controller on PCI bus 00 device f9, VID=8086,
DID=244a
PCI_IDE: chipset revision 3
PCI_IDE: not 100% native mode: will probe irqs later
ide0: BM-DMA at 0xbfa0-0xbfa7, BIOS settings: hda:DMA, hdb:DMA
ide1: BM-DMA at 0xbfa8-0xbfaf, BIOS settings: hdc:pio, hdd:pio
hda: IBM-DJSA-210, ATA DISK drive
hdb: TOSHIBA DVD-ROM SD-C2502, ATAPI CD/DVD-ROM drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
hda: 19640880 sectors (10056 MB) w/384KiB Cache, CHS=1222/255/63
hdb: ATAPI 24X DVD-ROM drive, 128kB Cache, UDMA(33)
Uniform CD-ROM driver Revision: 3.12
Partition check:
 hda: hda1 hda2 hda3 hda4

If there's anything else that might be useful, please CC me in the email.

Brian J. Conway
[EMAIL PROTECTED]

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VFAT access times in 2.4.1 kernel

[Brian J. Conway]

Hello, I just switched to 2.4.1 from 2.2.18 and have the kernel set up
in generally the same manner in terms of functionality.  I've found that
VFAT access is incredibly slow in directories with a large number of
files.  I have a single directory with approximately 1500 items, all
3-5MB apiece, and if I do 'ls -alt dir/ |more' on that directory, it
takes a full 2 seconds do list the contents of the first page.  If I do
so again immediately afterwards it displays immediately, but the same
effects occur if I wait any considerable amount of time (> 2 minutes). 
I've experienced no such problems under 2.2.18, and I'm running a 20GB
Maxtor drive running at UDMA(33) without any known issues.  Any ideas?

Brian J. Conway
[EMAIL PROTECTED]
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