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- .\" $Id$
- .TH DISK 8 "$Date$" "(c)1994 Larry McVoy" "LMBENCH"
- .SH NAME
- disk \- report raw disk performance
- .SH SYNOPSIS
- .B disk rdisk
- .SH DESCRIPTION
- .B disk
- reports the seek latencies and transfer bandwidths for the
- raw disk
- .BR rdisk .
- It determines the disk size and measures seek latencies
- for 2000 seek distances and transfer bandwidths for 150
- zone locations. The measurement points are spread uniformly
- across the disk to provide a representative picture of the
- disk performance.
- The seek distance is expressed in megabytes, since
- .B disk
- does not have access to the raw disk geometry information.
- The zone location is expressed in megabytes from location 0
- of the disk.
- .SH OUTPUT
- Output format for seek latencies is \f(CB"%0.1f %.2f\\n", megabytes,
- milli-seconds\fP, i.e.,
- .sp
- .ft CB
- 25.33
- .ft
- Output format for zone bandwidths is \f(CB"%0.1f %.2f\\n", megabytes,
- megabytes_per_second\fP, i.e.,
- .sp
- .ft CB
- 8.00 25.33
- .ft
- .SH ACKNOWLEDGEMENT
- Funding for the development of
- this tool was provided by Sun Microsystems Computer Corporation.
- .SH "SEE ALSO"
- lmbench(8).
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