clocktest is part of the Xenomai test suite and tests the Clock. For each CPU, it repeatedly prints a time offset (compared to the reference gettimeofday()), a drift value, the number of warps and the maximum warp in microseconds.
For this program to work, you need to run a suitable Xenomai enabled kernel with the respective module (xeno_posix).
- -C <clock_id>
clock to be tested, default=0 (CLOCK_REALTIME=0, CLOCK_MONOTONIC=1, CLOCK_HOST_REALTIME=42)
- -T <test_duration_seconds>
default=0 (Never stop, ^C to end)
print extra diagnostics for CLOCK_HOST_REALTIME
clocktest was written by Jan Kiszka. This man page was written by Roland Stigge.