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ZPOOL-IOSTAT-VIZ(1)	     General Commands Manual	     ZPOOL-IOSTAT-VIZ(1)

NAME
     zpool-iostat-viz -- Display ZFS pool latency histogram

SYNOPSIS
     zpool-iostat-viz [-d, --diff] [--by d|m] [-f file, --from-file file]
		      [--pt palette, --pal-time palette]
		      [--pc palette, --pal-count palette] [--digits] [--symbols]
		      [--help-colors] [parts ...]

DESCRIPTION
     The  zpool-iostat-viz  command  displays  ZFS pool latency information in a
     more intuitive format than the zpool(8) command invoked as "zpool -r".  La-
     tency information is displayed in a matrix with shorter  latency  times  at
     the  top, longer times at the bottom, and columns for the selected pools or
     devices the pools consist of.

     --by d|m	    Slice data by device (--by d) or by  measurement  (--by  m).
		    Use the left and right arrow keys on your keyboard to select
		    one of the available screens.

     -d, --diff     Show histogram for 3 seconds intervals instead of counts cu-
		    mulated  over the run-time of the program.	The sampling pe-
		    riod can be adjusted with the up and down arrow keys.

     --digits	    Use ".0123456789#" as histogram values.

     --from-file file
		    Read values from a file containing the output of:

			  zpool iostat -wvHp

     --help-colors  List the available color palettes for the --pc and --pt  op-
		    tions.

     --pt palette, --pal-time palette
		    Select a color palette for the display of time buckets.

     --pc palette, --pal-count palette
		    Select  a  color  palette  for the display of bucket popula-
		    tionss.

     --symbols	    Use " .:;*#" as histogram values.

     parts	    Select parts or vdevs to display.  By default,  all  devices
		    (including	cache and ZIL devices), the logical elements the
		    pools consists of (mirror, raidz1, ...) and  all  pools  are
		    displayed.

EXIT STATUS
     The zpool-iostat-viz program always returns an exit status of 0.

EXAMPLES
     The following is an example of a typical usage of the zpool-iostat-viz com-
     mand:

	   zpool-iostats-viz -d

	   zpool-iostats-viz --by d --symbols tank

SEE ALSO
     zpool(8)

AUTHORS
     The  zpool-iostat-viz  program  was  written  by  Chad  Miller  <chad@corn-
     silk.net>.

FreeBSD ports 15.quarterly	November, 6 2021	     ZPOOL-IOSTAT-VIZ(1)

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