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DISKINFO(8)		FreeBSD	System Manager's Manual		   DISKINFO(8)

NAME
     diskinfo -- get information about disk device

SYNOPSIS
     diskinfo [-ctv] disk ...

DESCRIPTION
     The diskinfo utility prints out information about a disk device, and
     optionally	runs a naive performance test on the device.

     If	given no arguments, the	output will be a single	line per specified
     device with the following fields: device name, sectorsize,	media size in
     bytes, media size in sectors, stripe size,	stripe offset, firmware	cylin-
     ders, firmware heads, and firmware	sectors.  The last three fields	are
     only present if the information is	available.

     If	given the -v option, the fields	will be	printed	one per	line with a
     descriptive comment.

     The -c option triggers a simple measurement of the	I/O read command over-
     head.

     The -t option triggers a simple and rather	naive benchmark	of the disks
     seek and transfer performance.

HISTORY
     The diskinfo command appeared in FreeBSD 5.1.

AUTHORS
     Poul-Henning Kamp

BUGS
     There are in order	of increasing severity:	lies, damn lies, statistics,
     and computer benchmarks.

FreeBSD	10.1		       November	9, 2004			  FreeBSD 10.1

NAME | SYNOPSIS | DESCRIPTION | HISTORY | AUTHORS | BUGS

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