NAME

       timedelta - LinuxCNC HAL component that measures thread scheduling timing behavior

SYNOPSIS

       loadrt timedelta [count=N|names=name1[,name2...]]

FUNCTIONS

       timedelta.N

PINS

       timedelta.N.jitter s32 out (default: 0)
              Worst-case scheduling error (in ns).  This is the largest discrepancy between ideal
              thread period, and actual time between sequential runs  of  this  component.   This
              uses the absolute value of the error, so 'got run too early' and 'got run too late'
              both show up as positive jitter.

       timedelta.N.current-jitter s32 out (default: 0)
              Scheduling error (in ns) of  the  current  invocation.   This  is  the  discrepancy
              between  ideal  thread  period,  and  actual  time  since  the previous run of this
              component.  This uses the absolute value of the error, so 'got run too  early'  and
              'got run too late' both show up as positive jitter.

       timedelta.N.current-error s32 out (default: 0)
              Scheduling  error  (in  ns)  of  the  current  invocation.  This is the discrepancy
              between ideal thread period, and  actual  time  since  the  previous  run  of  this
              component.   This  does  not  use  the absolute value of the error, so 'got run too
              early' shows up as negative error and 'got run  too  late'  shows  up  as  positive
              error.

       timedelta.N.min s32 out (default: 0)
              Minimum time (in ns) between sequential runs of this component.

       timedelta.N.max s32 out (default: 0)
              Maximum time (in ns) between sequential runs of this component.

       timedelta.N.reset bit in
              Set this pin to True, then back to False, to reset some of the statistics.

       timedelta.N.out s32 out
              Time  (in  ns)  since  the  previous run of this component.  This should ideally be
              equal to the thread period.

       timedelta.N.err s32 out (default: 0)
              Cumulative time error (in ns).  Probably not useful.

       timedelta.N.avg-err float out (default: 0)
              The average scheduling error (in ns).

AUTHOR

       Jeff Epler

LICENSE

       GPL