table of contents
BTRACE(8) | BTRACE(8) |
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 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 © 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 |