Boosting performance when a read-only disc is in the drive

Stephen R Laniel steve at laniels.org
Mon May 2 03:37:10 UTC 2005


On Sun, May 01, 2005 at 10:15:06PM -0500, Tom Adelstein wrote:
> I would be surprised if you couldn't increase performance on your drive.
> 
> For example, I noticed that hdparm was set to 0 on my cdrom. I suggest
> you take a look at the man page for hdparm and see if your using dma.
> 
> If not, you might find an increase in speed by setting the using-dma (-
> d) flag to 1. You can try it both ways.

That's a different question. My question wasn't whether I
could increase performance in general. My question was: I
have a rewritable-CD drive, and I wonder if I could increase
its performance during read-only activities -- above and
beyond any performance increases that take effect the rest
of the time.

I had in mind things like buffers: if Linux knew that it
didn't need to keep any write buffers for the drive (I'm not
sure how such things are implemented, so don't nail me too
hard if that's an ignorant description of how one implements
buffers), could that speed things up at all?

-- 
Stephen R. Laniel
steve at laniels.org
+(617) 308-5571
http://laniels.org/




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