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Old 10-14-2003, 08:25 PM   #1
adz
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DVD performance software


Does anyone know of some good DVD benchmarking/tuning software under linux and windows? I want to compare performances between the two OSes since linux doesn't seem to play DVDs as smoothly as windows anymore on my system. I've tried with numerous players (ogle, xine, mplayer - self compiled). Just so everyone knows I got the best performance out of mplayer but windows is still better. I don't know what's wrong but way back when, linux used to play DVDs just fine. So basically I want to investigate the matter further. I've tried hdparm as suggested in a particular website I visited but it says that hdparm is not supported on this drive. I don't know whether that's because it's not a hard drive or because it's SCSI-emulated. Either way, it doesn't work.

One other thing I'd like to do is possibly copy the contents of a dvd to my hard drive and play it from there. If anyone knows how to make that work, I'd be interested.

Any help would be greatly appreciated.
 
Old 10-14-2003, 08:36 PM   #2
megaspaz
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have you checked if your dvd player has dma enabled?

edit:

when using scsi-emulation, use the IDE label your dvd player would be if you weren't using scsi-emulation.

ex. my dvd player is on /dev/hdc ( the scsi block device is actually /dev/scd1). use

hdparm -v /dev/hdc

Last edited by megaspaz; 10-14-2003 at 08:37 PM.
 
Old 10-14-2003, 09:59 PM   #3
adz
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DMA is off. However when I try to turn it on with hdparm -d 1 /dev/hdc it says "operation not permitted" and defaults back to DMA being off.
 
Old 10-14-2003, 10:05 PM   #4
megaspaz
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Quote:
Originally posted by adz
DMA is off. However when I try to turn it on with hdparm -d 1 /dev/hdc it says "operation not permitted" and defaults back to DMA being off.
would /dev/hdc be the channel you're dvd drive is on? /dev/hdc is the IDE channel where my dvd player is at.

also what are you using? grub or lilo?
 
Old 10-14-2003, 11:32 PM   #5
adz
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Yes that's where my DVD is. In fact all the devices (hda through to hdd) don't support DMA on that computer. Is that indicative of something? The first two are hard drives and the second two are DVD and CD-RW respectively.

I'm using LILO.
 
Old 10-14-2003, 11:59 PM   #6
toloban
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I also got that "operation not permitted" message from hdparm.
Try adding this line to /etc/modules.conf:

options ide-cd dma=1

DVD performance was noticeably better. DMA is still on even now that I use too SCSI emulation, haven't tryed to play DVD though.
 
  


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