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80 lines
1.5 KiB
Plaintext
80 lines
1.5 KiB
Plaintext
.TH vmstat.d 1m "$Date: 2015/09/30 22:01:09 $" "USER COMMANDS"
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.SH NAME
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vmstat.d \- vmstat demo in DTrace. Uses DTrace.
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.SH SYNOPSIS
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.B vmstat.d
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.SH DESCRIPTION
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This has been written to demonstrate fetching the same data as vmstat
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from DTrace. This program is intended as a starting point for other
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DTrace scripts, by beginning with familiar statistics.
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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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unstable - uses various kernel symbols.
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.SH EXAMPLES
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.TP
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Print virtual memory statistics every second,
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#
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.B vmstat.d
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.PP
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.SH FIELDS
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.TP
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w
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swapped out light weight processes
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.TP
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swap
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virtual memory free, Kbytes
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.TP
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free
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free RAM, Kbytes
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.TP
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re
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page reclaims, Kbytes
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.TP
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mf
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minor faults, Kbytes
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.TP
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pi
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page ins, Kbytes
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.TP
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po
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page outs, Kbytes
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.TP
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fr
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pages freed, Kbytes
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.TP
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sr
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scan rate, pages
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.TP
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in
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interrupts, number
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.TP
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sy
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system calls, number
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.TP
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cs
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context switches, number
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.PP
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.SH NOTES
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Most of the statistics are in units of kilobytes, unlike the
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original vmstat command which sometimes uses page counts.
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As this program does not use Kstat, there is no summary since boot line.
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Free RAM is both free free + cache free.
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.PP
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.SH DOCUMENTATION
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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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vmstat.d will run until Ctrl\-C is hit.
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.SH AUTHOR
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Brendan Gregg
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[Sydney, Australia]
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.SH SEE ALSO
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vmstat(1M), dtrace(1M)
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