sendme (8)

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.

-a, --affinity[=PROC]

Run on procesor number PROC. If PROC is not specified, run on current processor.

-b, --breaktrace=USEC

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.

-l, --loops=LOOPS

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 been reached.

-p, --prio=PRIO

Set the priority of the process.

backfire.ko

# modprobe backfire
# sendme -a -p99 -l1000000
Samples:  1000000
To:   Min    0, Cur    0, Avg    1, Max   11
From: Min    2, Cur    3, Avg    3, Max   43

Carsten Emde <[email protected]>

backfire(4)