[PlanetCCRMA] Re: DVD playback not fluent

Alex Timmer mijn_troep@yahoo.com
Wed Apr 23 05:02:01 2003

hi all, replying to myself with a (for me) surprising observation:

 --- Alex Timmer <mijn_troep@yahoo.com> wrote: 
> interesting that you have a 10MB/sec read speed, as my drive will
> only ever do as much as 1.40MB/sec (16*DVD, 48*CDROM, udma
> enabled).
> when i can have fluent playback with that, and if hdparm isn't
> fooling me, then i think that your drive must be more than fast
> enough.

yesterday i tested for fun my DVD drive with an actual DVD disc in
there. and what do you think?

hdparm -tT /dev/hdc now gives me 5.5MB/sec disc read speed!

i put in the original disc with whom i tested, and it only does
1.40MB/sec. this is a 4-speed burned CDRW. hmmm. then i took a
commercially pressed data CDROM and retested. 3.10MB/sec. 

ergio conclusio : hdparm results while testing your cdrom or dvd
drive depend on the media used!!

ofcourse if i stick to one disc, i can still see relative
improvements or degradations in performance while tweaking the
settings. i guess.


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