[OT] DVD read maximum at 3.5x, is this normal?

Hello. I am a hardware newbie.

I am actually pretty surprised my IDE-wired DVD writer can only reach 
avarage of 4MBytes/s when I try to make iso file out of my DVDs by using 
'dd' (tried various block sizes and settled down with 20480bytes which 
seems to be fastest for me). And, it takes 100% system resource to do 
that. The machine is Athon 64 3000+ thus I guess only 3 years old. If 
this is the case, any burning DVD beyond 2X is a joke.

I cannot imagine any boundary hardware implied, except IDE bandwidth 
which is much more than 4MBytes/s. Besides the CPU doesn't have to be 
that busy, I guess 100% CPU can get me 40MBytes/s if I where to read 
hard disk.

Since I have 14 DVDs to make iso file from, current speed require me to 
change every 20min, then I would spend a whole working day changing the 
DVDs. I hope I can get a 10min/change or 5min/change frequency so I can 
do the job in half a day. Is it possible?

Thanks.


-- 
To UNSUBSCRIBE, email to [email protected]
with a subject of "unsubscribe". Trouble? Contact [email protected]
Archive: http://lists.debian.org/[email protected]