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64 lines
1.1 KiB
Plaintext
64 lines
1.1 KiB
Plaintext
.TH fddist 1m "$Date: 2015/09/30 22:01:09 $" "USER COMMANDS"
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.SH NAME
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fddist \- file descriptor usage distributions. Uses DTrace.
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.SH SYNOPSIS
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.B fddist [\-r|\-w]
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.SH DESCRIPTION
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This prints distributions for read and write events by file descriptor,
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by process. This can be used to determine which file descriptor a
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process is doing the most I/O with.
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Since this uses DTrace, only the root user or users with the
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dtrace_kernel privilege can run this command.
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.SH OS
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Solaris
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.SH STABILITY
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stable - needs the syscall provider.
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.SH OPTIONS
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.TP
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\-r
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reads only
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.TP
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\-w
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writes only
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.PP
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.SH EXAMPLES
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.TP
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Sample both read and write activity,
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#
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.B fddist
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.TP
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Sample reads only,
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#
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.B fddist
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\-r
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.PP
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.SH FIELDS
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.TP
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EXEC
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process name
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.TP
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PID
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process ID
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.TP
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value
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file descriptor
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.TP
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count
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number of events
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.PP
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.SH BASED ON
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/usr/demo/dtrace/lquantize.d
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.PP
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.SH DOCUMENTATION
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DTrace Guide "Aggregations" chapter (docs.sun.com)
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See the DTraceToolkit for further documentation under the
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Docs directory. The DTraceToolkit docs may include full worked
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examples with verbose descriptions explaining the output.
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.SH EXIT
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fddist will sample until Ctrl\-C is hit.
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.SH SEE ALSO
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dtrace(1M)
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