sendme - Send a signal from driver to user and measure time intervals
sendme [-a|-a PROC] [-b USEC] [-l loops] [-p PRIO]
The program sendme uses the backfire driver to send a signal from
driver to user. It then reads the timestamp from the driver and
calculates the time intervals to call the driver and to receive the
signal from the driver.
Run on procesor number PROC. If PROC is not specified, run on
Send break trace command when latency > USEC. This is a
debugging option to control the latency tracer in the realtime
preemption patch. It is useful to track down unexpected large
latencies on a system.
Set the number of loops. The default is 0 (endless). This option
is useful for automated tests with a given number of test
cycles. Sendme is stopped once the number of timer intervals has
Set the priority of the process.
# modprobe backfire
# sendme -a -p99 -l1000000
To: Min 0, Cur 0, Avg 1, Max 11
From: Min 2, Cur 3, Avg 3, Max 43
Carsten Emde <C.Emde@osadl.org>