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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXAMPLE | AUTHORS | REPORTING BUGS | COPYRIGHT | SEE ALSO | COLOPHON |
BTRACE(8) BTRACE(8)
btrace - perform live tracing for block devices
btrace [-s] [-t] [-w N] [-n N] [-b N] [-r <dbg mnt>] [-a <trace>...]
<dev>...
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.
-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.
Simply running
% btrace /dev/sda
will show a trace of the device /dev/sda.
blkparse was written by Jens Axboe, Alan D. Brunelle and Nathan
Scott. This man page was created from the blktrace documentation by
Bas Zoetekouw.
Report bugs to <linux-btrace@vger.kernel.org>
Copyright © 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.
blktrace (8), blkparse (1), verify_blkparse (1), blkrawverify (1),
btt (1)
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 man-pages@man7.org] It is not known how
to report bugs for this man page; if you know, please send a mail to
man-pages@man7.org. This page was obtained from the project's
upstream Git repository
⟨http://git.kernel.org/cgit/linux/kernel/git/axboe/blktrace.git/⟩ on
2017-07-05. If you discover any rendering problems in this HTML ver‐
sion 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 man‐
ual page), send a mail to man-pages@man7.org
blktrace git-20070306202522 March 6, 2007 BTRACE(8)