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-.TH iopending 1m "$Date:: 2007-08-05 #$" "USER COMMANDS"
-.SH NAME
-iopending \- plot number of pending disk events. Uses DTrace.
-.SH SYNOPSIS
-.B iopending
-[\-c] [\-d device] [\-f filename] [\-m mount_point] [interval [count]]
-.SH DESCRIPTION
-This samples the number of disk events that are pending and plots a
-distribution graph. By doing this the
-"serialness" or "parallelness" of disk behaviour can be distinguished.
-A high occurance of a pending value of more than 1 is an indication of
-saturation.
-
-Since this uses DTrace, only the root user or users with the
-dtrace_kernel privilege can run this command.
-.SH OS
-Solaris
-.SH STABILITY
-stable - needs the io provider.
-.SH OPTIONS
-.TP
-\-c
-clear screen
-.TP
-\-d device
-instance name to snoop (eg, dad0)
-.TP
-\-f filename
-full pathname of file to snoop
-.TP
-\-m mount_point
-mountpoint for filesystem to snoop
-.SH EXAMPLES
-.TP
-Default output, print I/O summary every 1 second,
-#
-.B iopending
-.PP
-.TP
-Print 10 second samples,
-#
-.B iopending
-10
-.PP
-.TP
-Print 12 x 5 second samples,
-#
-.B iopending
-5 12
-.PP
-.TP
-Snoop events on the root filesystem only,
-#
-.B iopending
-\-m /
-.PP
-.SH FIELDS
-.TP
-value
-number of pending events, 0 == idle
-.TP
-count
-number of samples @ 1000 Hz
-.TP
-load
-1 min load average
-.TP
-disk_r
-total disk read Kb for sample
-.TP
-disk_w
-total disk write Kb for sample
-.PP
-.SH IDEA
-Dr Rex di Bona
-.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
-iopending will run forever until Ctrl\-C is hit, or the
-specified count is reached.
-.SH AUTHOR
-Brendan Gregg
-[Sydney, Australia]
-.SH SEE ALSO
-iosnoop(1M), iotop(1M), dtrace(1M)
-