elevator code in kernel

From: Kip Matthew Macy (kip@eventdriven.org)
Date: Fri Apr 28 2000 - 18:19:20 EST


Is it necessary for the elevator sorting code to be hard-coded into the
kernel?

Elevator sorting offers little or no benefit to higher performance I./O
devices - An
extreme example would be RAID controllers that have on card memory that
can do
reordering more intelligently themselves. A more general example would
be a typical
IDE drive with a 2MB buffer that automatically reorders writes to
minimize head
movement.

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