diskinfo man page on FreeBSD

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

     diskinfo — get information about disk device

     diskinfo [-ctv] disk ...

     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‐

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

     The diskinfo command appeared in FreeBSD 5.1.

     Poul-Henning Kamp

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

BSD			       November 9, 2004				   BSD

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