btrace(8) [centos man page]
BTRACE(8) BTRACE(8) NAME
btrace - perform live tracing for block devices SYNOPSIS
btrace [-s] [-t] [-w N] [-n N] [-b N] [-r <dbg mnt>] [-a <trace>...] <dev>... DESCRIPTION
The btrace script provides a quick and easy way to do live tracing of block devices. It calls blktrace on the specified devices and pipes the output through blkparse for formatting. See blktrace (8) for more in-depth information about how blktrace works. OPTIONS
-s Displays data sorted by program (see blkparse (1)). -t Displays time deltas per IO (see blkparse (1)). -w N Sets run time to the number of seconds specified (see blktrace (8)). -n N Specifies the number of buffers to use (see blktrace (8)). -b N Specifies buffer size for event extraction (scaled by 1024) (see blktrace (8)). -r <dbg mnt> Specifies the debugfs mountpoint. -a <trace>... Adds mask to current filter (see blktrace (8)). <dev> Specifies the device to trace. EXAMPLE
Simply running % btrace /dev/sda will show a trace of the device /dev/sda. AUTHORS
blkparse was written by Jens Axboe, Alan D. Brunelle and Nathan Scott. This man page was created from the blktrace documentation by Bas Zoetekouw. REPORTING BUGS
Report bugs to <linux-btrace@vger.kernel.org> COPYRIGHT
Copyright (C) 2006 Jens Axboe, Alan D. Brunelle and Nathan Scott. This is free software. You may redistribute copies of it under the terms of the GNU General Public License <http://www.gnu.org/licenses/gpl.html>. 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
blktrace (8), blkparse (1), verify_blkparse (1), blkrawverify (1), btt (1) blktrace git-20070306202522 March 6, 2007 BTRACE(8)
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BNO_PLOT(1) BNO_PLOT(1) NAME
bno_plot - generate interactive 3D plot of IO blocks and sizes SYNOPSIS
bno_plot [ -h | --help ] [ -v | --verbose ] [ -K | --keys-below ] [ <file...> ] DESCRIPTION
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
bno_plot was written by Alan D. Brunelle. This man page was created from the blktrace documentation by Bas Zoetekouw. REPORTING BUGS
Report bugs to <linux-btrace@vger.kernel.org> COPYRIGHT
Copyright (C) 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 <http://www.gnu.org/licenses/gpl.html>. 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
btt (1), gnuplot (1), blktrace (8), blkparse (1), verify_blkparse (1), blkrawverify (1) blktrace git-20080213182518 February 22, 2007 BNO_PLOT(1)