I use beaglebone black and install Linux Debian (Linux beaglebone 4.4.6-bone-rt-r6 #1 PREEMPT RT Thu Mar 17 04:47:32 UTC 2016 armv7l GNU/Linux), I want to test the characteristic of Real Time, so I use cyclictest:
After “cyclictest -p 90 - m -c 0 -i 200 -n -h 100 -q -l 10000”, I got:
# Total: 000010000
# Min Latencies: 00012
# Avg Latencies: 00032
# Max Latencies: 00053
# Histogram Overflows: 00000
# Histogram Overflow at cycle number:
# Thread 0:
The result means the average latencies is 32 us.
I wonder if it is normal or not? (In my opinion, it is a little wired, because with the RT-preempt patch, it should be better than it.)
And if there is something wrong in the process, please tell me .
Thanks so much.