On Wednesday February 12 2003 10:15 pm, RYan Moe wrote:
> Hi, I'm using 9.0, my drive is a Creative Labs 12/10/32 on
> /dev/hdc.I've turned DMA on for this drive by using hdparm and
> creating a harddiskhdc file. However anytime the drive is accessed
> my CPU usage shoots up to around 75% (normally I can't hardly get
> it past 10%) which shouldn't happen if its using DMA. I know for a
> fact the drive supports DMA as I've had it about 2 years. There
> isn't a problem with the drive either as I booted into windows and
> burned a CD with the CPU usage never going above 2%. I don't
> recall having this problem when I had 8.2 installed. I've also used
> this drive w/ Debian and it worked fine in there.
>
> Thanks,
> Ryan
Creative doesn't say much about who makes it. They re-badge
various sources. Windoze is not a recommendation for hardware to work
on better OS's. 'Works great with Windoze' is most often a derogatory
statement about hardware. MOF, that's one explaination I can think of
at the moment. Windoze kernels are a joke, Deb's are usually old
fashioned yesterday's stuff. Probly older than the kernel you had
with 8.2. Could be your hardware is fallin behind current Linux
kernels?
OTOH, that only somewhat fits your slow tranfer rates tho. The
motherboard might. Who makes it, and what chipset? Also mention if
it's in a ready made (ie, OEM only), because then it and often it's
chipsets are made to that vendors specs or Dell's. What drives are
hd[abd] ? might help too. Another possibility is spindle wobble
causing eratic signals over IDE. That could account for both slow
transfer rates and high cpu usage. At two years old and unknown
sources, that becomes a realistic explaination, specially if the
transport mechanism was actually made by Ricoh. Have you tried
burnin at low speeds (4x) ?
Post the output from 'hdparm -v -i /dev/hdc' and maybe
somebody'll see somethin.... I'm runnin out of ideas.
--
Tom Brinkman Corpus Christi, Texas
Want to buy your Pack or Services from MandrakeSoft?
Go to http://www.mandrakestore.com
