On Fri, 2016-12-09 at 02:37 +0100, Carlos E. R. wrote:
An interesting exercise is to partition an empty disk in, say, 20 equally sized partitions, and measure the speed on each one. And do it for different filesystems, too.
You probably will find out that the disk is faster about 1/3 of the way.
True for sequential IO, for obvious reasons (more data on a single
track in the outer part of the disk). For random IO, you'll have an
average wait time of a half rotation, plus head movement, and both is
independent on the length of the track.
Martin
--
Dr. Martin Wilck