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       latency - Xenomai timer latency benchmark


       latency [options]


       latency  is  part  of  the  Xenomai  test  suite. It is a timer latency
       benchmark program.  The system must  run  a  suitable  Xenomai  enabled
       kernel with the respective module (xeno_timerbench).


       latency accepts the following options:

       -h     print histograms of min, avg, max latencies

       -s     print statistics of min, avg, max latencies

       -H <histogram-size>
              default = 200, increase if your last bucket is full

       -B <bucket-size>
              default = 1000ns, decrease for more resolution

       -p <period_us>
              sampling period

       -l <data-lines per header>
              default=21, 0 to supress headers

       -T <test_duration_seconds>
              default=0, so ^C to end

       -q     supresses RTD, RTH lines if -T is used

       -D <testing_device_no>
              number of testing device, default=0

       -t <test_mode>
              0=user task (default), 1=kernel task, 2=timer IRQ

       -f     freeze trace for each new max latency

       -c <cpu>
              pin measuring task down to given CPU

       -P <priority>
              task priority (test mode 0 and 1 only)


       latency  was written by Philippe Gerum <>. This man page
       was written by Roland Stigge <>.