diskinfo(8)
NAME
diskinfo - get information about disk device
SYNOPSIS
diskinfo [-ctv] disk ...
DESCRIPTION
- The diskinfo utility prints out information about a disk de
- vice, 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 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 overhead.
- 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. - BSD November 9, 2004