выполнять трассировку в реальном времени для блочных устройств (perform live tracing for block devices)
Имя (Name)
btrace - perform live tracing for block devices
Синопсис (Synopsis)
btrace [-s] [-t] [-w N] [-n N] [-b N] [-r <dbg mnt>] [-a
<trace>...] <dev>...
Описание (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.
Параметры (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.
Примеры (Examples)
Simply running
% btrace /dev/sda
will show a trace of the device /dev/sda.
