Download your favorite Linux distribution at LQ ISO.
Go Back > Forums > Linux Forums > Linux - Hardware
User Name
Linux - Hardware This forum is for Hardware issues.
Having trouble installing a piece of hardware? Want to know if that peripheral is compatible with Linux?


  Search this Thread
Old 08-07-2003, 04:48 PM   #1
LQ Newbie
Registered: Aug 2003
Location: Overland Park
Distribution: RH9
Posts: 1

Rep: Reputation: 0
DVD on RH9 hogs CPU (100%) reading, chatty 'smart' NMI to blame? (combo drive)

Using stock (but patched to -19.9) RH9, I have huge cpu-hogging going on, or an I/O bound 1.2GHz Athlon on an ALi 1535D+/M1647 system. From looking at kernel archives, it looks like there was a problem with the chatty, smart ATA DVD-rom reader sending lots of debug data with every packet, to say how sure it was read correctly, how much UDF error correction was necessary, blahblahblah.

Is this even on target? Do I need to tell the generic ide driver to get on with it and 'Just DMA it?'

This is from mere reading DVD-R on combo-drives (one of which is a burner, and indeed the UDF system is mounted under /mnt/cdrom. Sorry, I don't have another kind.

Should I be simply running a utility like hdparm or such before running cp and mplayer and other apps?

This happens under WinXP (different boxen) too, it's a common situation in some ways. Still...what's wrong and do I need to pick a 2.5 or 2.6test to fix it?


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Mounting DVD to a CDR/DVD combo drive f34r7h1s Slackware 38 05-16-2005 08:50 PM
Play DVD on CDRW/DVD Combo Drive?? halo14 Linux - Laptop and Netbook 13 09-21-2004 10:21 AM
RH9 enabling DMA for DVD/CD/CDRW combo filkacik Linux - Software 0 10-03-2003 03:57 PM
DVD/CDRW combo drive toySOILDer Linux - Hardware 0 08-12-2003 11:23 PM
cd-rw/dvd combo drive in linux? eccarlsen Linux - Hardware 3 10-04-2002 02:48 PM > Forums > Linux Forums > Linux - Hardware

All times are GMT -5. The time now is 09:26 PM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Open Source Consulting | Domain Registration