NAME
btrace - perform live tracing for block devicesSYNOPSIS
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
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 <[email protected]>COPYRIGHT
Copyright © 2006 Jens Axboe, Alan D. Brunelle and Nathan Scott.SEE ALSO
blktrace (8), blkparse (1), verify_blkparse (1), blkrawverify (1), btt (1)| March 6, 2007 | blktrace git-20070306202522 |