BNO_PLOT(1)                                                      BNO_PLOT(1)

NAME         top

       bno_plot - generate interactive 3D plot of IO blocks and sizes

SYNOPSIS         top

       bno_plot [ -h | --help ]
                [ -v | --verbose ]
                [ -K | --keys-below ]
                [ <file...> ]

DESCRIPTION         top

       bno_plot is a visualization tool for the block layer IO tracing tool
       called blktrace(8).  As noted in its documentation, blktrace is a
       block layer IO tracing mechanism which provides detailed information
       about request queue operations up to user space.

       bno_plot utilizes gnuplot to generate a 3D plot of the block number
       output from btt.  If no <files> are specified, it will utilize all
       files generated after btt was run with -B blknos (meaning: all files
       of the form blknos*[rw].dat).

       The -K option forces bno_plot to put the keys below the graph.  If it
       is not specified, all keys for input files are put in the upper right
       corner of the graph. If the number of devices exceed 10, then
       bno_plot will automatically push the keys under the graph.

       To use this utility, the gnuplot package needs to be installed.

       To exit the plotter, enter 'quit' or ^D at the 'gnuplot> ' prompt.

AUTHORS         top

       bno_plot was written by Alan D. Brunelle.  This man page was created
       from the blktrace documentation by Bas Zoetekouw.

REPORTING BUGS         top

       Report bugs to <>

COPYRIGHT         top

       Copyright © 2008 Hewlett-Packard Development Company, L.P.
       This is free software.  You may redistribute copies of it under the
       terms of the GNU General Public License
       <>.  There is NO WARRANTY, to the
       extent permitted by law.
       This manual page was created for Debian by Bas Zoetekouw.  It was
       derived from the documentation provided by the authors and it may be
       used, distributed and modified under the terms of the GNU General
       Public License, version 2.
       On Debian systems, the text of the GNU General Public License can be
       found in /usr/share/common-licenses/GPL-2.

SEE ALSO         top

       btt (1), gnuplot (1), blktrace (8), blkparse (1), verify_blkparse
       (1), blkrawverify (1)

COLOPHON         top

       This page is part of the blktrace (Linux block layer I/O tracer)
       project.  Information about the project can be found at [unknown --
       if you know, please contact] It is not known how
       to report bugs for this man page; if you know, please send a mail to  This page was obtained from the project's
       upstream Git repository
       ⟨⟩ on
       2018-10-29.  (At that time, the date of the most recent commit that
       was found in the repository was 2018-08-31.)  If you discover any
       rendering problems in this HTML version of the page, or you believe
       there is a better or more up-to-date source for the page, or you have
       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to

blktrace git-20080213182518   February 22, 2007                  BNO_PLOT(1)