CDROM performance.

Rogier Wolff (R.E.Wolff@BitWizard.nl)
Wed, 25 Feb 1998 11:28:55 +0100 (MET)


Hi,

I have a new 24x CDROM. The manual claims it can do 3500k per second.

However, when I measure the performance, for the first 280Mb, the
performance goes up as expected (The rotational speed is held
constant, so as you get further from the spindle, the transfer speed
goes up. background: CDs start at the inside).

However at 280Mb, when the performance reaches around 2600 k per
second, I get a "cloud" of data points, none above 2700k per second.

Is there a kernel imposed speedlimit on CDROMs?

Roger.

-- 
If it's there and you can see it, it's REAL      |___R.E.Wolff@BitWizard.nl  |
If it's there and you can't see it, it's TRANSPARENT |  Tel: +31-15-2137555  |
If it's not there and you can see it, it's VIRTUAL   |__FAX:_+31-15-2138217  |
If it's not there and you can't see it, it's GONE! -- Roy Wilks, 1983  |_____|

- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu