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+.TH xvmstat 1m  "$Date:: 2007-08-05 #$" "USER COMMANDS"
+.SH NAME
+xvmstat \- extended vmstat demo in DTrace. Uses DTrace.
+.SH SYNOPSIS
+.B xvmstat
+[interval [count]]
+.SH DESCRIPTION
+This has been written to demonstrate fetching similar data as vmstat
+from DTrace, with a few extra fields.
+
+Since this uses DTrace, only the root user or users with the
+dtrace_kernel privilege can run this command.
+.SH OS
+Solaris
+.SH STABILITY
+unstable - needs various kernel symbols.
+.SH EXAMPLES
+.TP
+Print virtual memory statistics every second,
+# 
+.B xvmstat
+.TP
+Print every 5 seconds, 6 times,
+#
+.B xvmstat
+5 6
+.PP
+.SH FIELDS
+.TP
+w
+swapped out LWPs, number
+.TP
+swap
+virtual memory free, Mb
+.TP
+free
+free RAM, Mb
+.TP
+re
+page reclaims, pages
+.TP
+maj
+major faults, pages
+.TP
+mf
+minor faults, pages
+.TP
+cow
+copy-on-write faults, pages
+.TP
+pro
+protection faults, pages
+sr
+scan rate, pages
+.TP
+epi
+executable page ins, pages
+.TP
+epo
+executable page outs, pages
+.TP
+epf
+executable frees, pages
+.TP
+api
+anonymous page ins, pages
+.TP
+apo
+anonymous page outs, pages
+.TP
+apf
+anonymous frees, pages
+.TP
+fpi
+filesystem page ins, pages
+.TP
+fpo
+filesystem page outs, pages
+.TP
+fpf
+filesystem frees, pages
+.PP
+.SH NOTES
+Most of the statistics are in units of pages, unlike the
+original vmstat command which sometimes uses kilobytes.
+
+All page values are per second values.
+
+As this program does not use Kstat, there is no summary since boot line.
+
+Free RAM is both free free + cache free.
+.PP
+.SH DOCUMENTATION
+See the DTraceToolkit for further documentation under the 
+Docs directory. The DTraceToolkit docs may include full worked
+examples with verbose descriptions explaining the output.
+.SH EXIT
+xvmstat will run until Ctrl\-C is hit, or until the count argument
+has been satisfied.
+.SH AUTHOR
+Brendan Gregg
+[Sydney, Australia]
+.SH SEE ALSO
+vmstat(1M), dtrace(1M)