On Tue, Jan 22, 2002 at 01:27:33AM +0530, J wrote: > BTW > What is an elevator? An elevator (known as a 'lift' in other parts of the English speaking world) carries passengers from one floor to another in larger buildings. Elavators usually handle all the passengers going up before handling passengers going down -- this reduces the amount of time people spend in the elevator. The same thing can be done with block devices -- the driver can order reads and writes to keep the disk head moving in the same direction for as long as possible before turning around and going the other direction. They tend to provide significant performance improvements. They are also not limited to device drivers, though that is the easiest for me to explain.. Cheers :) -- The Bill of Rights: 7 out of 10 rights haven't been sold yet! Contact your congressman for details how *you* can buy one today!
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