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Old 07-13-2003, 08:56 PM   #1
InsaneBob
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Dma


I activated dma on /dev/hdc to speed up my dvd playback on xine. The commands I used was hdparm -d1 /dev/hdc but whenever I restart the comp it switches back to it being deactivated. What option do I add to fstab to activated it on startup.
 
Old 07-13-2003, 09:02 PM   #2
DrOzz
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add that same line to your rc.local file.
and also add:
options hdc-cd dma=1
to your /etc/modules.conf file
 
Old 07-13-2003, 09:04 PM   #3
InsaneBob
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thanks
 
Old 07-13-2003, 09:25 PM   #4
DrOzz
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did it work alright?
 
Old 07-13-2003, 11:38 PM   #5
InsaneBob
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Ya it worked I was wondering though if I should activate dma for my hard drive too?
 
Old 07-13-2003, 11:48 PM   #6
LoungeLizard
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I would you will see a big difference in proformance if you do
 
Old 07-15-2003, 09:45 PM   #7
Bruce Hill
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Quote:
Originally posted by LoungeLizard
I would you will see a big difference in proformance if you do
I changed I/O from 16-bit to 32-bit, and enabled DMA, and only saw a change from 47.06 MB/sec to 47.41 MB/sec, and I don't even know if these times are good or not. I would like to hear what someone has to say about this.
 
Old 07-16-2003, 06:49 AM   #8
crashmeister
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Just do hdparm -I /dev/whatever and you'll see what is enabled.There is a * beside the mode that is currently running - like *udma5 or whatever is on.
I only get 30 MB/sec out of my drive.
 
  


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