bno_plot(1) — Linux manual page


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

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

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

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),

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 2021-08-27.  (At that time, the date of the most recent commit
       that was found in the repository was 2021-06-28.)  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)

Pages that refer to this page: btt(1)