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

NAME
     diskinfo -- get information about disk device

SYNOPSIS
     diskinfo [-citv] disk ...

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

     The following options are available:

     -v	 Print fields one per line with	a descriptive comment.

     -c	 Perform a simple measurement of the I/O read command overhead.

     -i	 Perform a simple IOPS benchmark.

     -t	 Perform a simple and rather naive benchmark of	the disks seek and
	 transfer performance.

     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.

HISTORY
     The diskinfo command appeared in FreeBSD 5.1.

AUTHORS
     The diskinfo utility was written by Poul-Henning Kamp <phk@FreeBSD.org>.

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

FreeBSD	11.1		      September	22, 2016		  FreeBSD 11.1

NAME | SYNOPSIS | DESCRIPTION | HISTORY | AUTHORS | BUGS

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=diskinfo&sektion=8&manpath=FreeBSD+11.1-RELEASE+and+Ports>

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