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 <mwilck@suse.com>, Tel. +49 (0)911 74053 2107 SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton HRB 21284 (AG Nürnberg) -- To unsubscribe, e-mail: opensuse-factory+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-factory+owner@opensuse.org