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diskinfo
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, firmware cylinders, firmware heads, and
firmware sectors. The last three fields are only present if the informa-
tion 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 6.2 November 9, 2004 FreeBSD 6.2
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