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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".
       Latency 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
		      cumulated	over the run-time of the  program.   The  sam-
		      pling  period 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
		      options.

       --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 de-
		      vices (including cache and ZIL devices), the logical el-
		      ements 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
       command:

	     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@cornsilk.net>.

FreeBSD	ports 15.0	       November, 6 2021		   ZPOOL-IOSTAT-VIZ(1)

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=zpool-iostat-viz&sektion=1&manpath=FreeBSD+Ports+15.0>

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