On Mon, Jan 22, 2018 at 09:23:27PM -0800, Richard Cochran wrote: > On Wed, Jan 17, 2018 at 03:06:11PM -0800, Jesus Sanchez-Palencia wrote: > > First, a baseline test was ran for 10 minutes with the plain kernel only: > > > > | | plain kernel @ 1ms | > > |-----------------+--------------------+ > > | min (ns): | +4.820000e+02 | > > | max (ns): | +9.999300e+05 | > > | pk-pk: | +9.994480e+05 | > > ... > > > | | tbs SW @ 1ms | tbs HW @ 1ms | tbs HW @ 250 us | > > |-----------------+-------------------+----------------+-----------------| > > | min (ns): | +1.510000e+02 | +4.420000e+02 | +4.260000e+02 | > > | max (ns): | +9.977030e+05 | +5.060000e+02 | +5.060000e+02 | > > | pk-pk: | +9.975520e+05 | +6.400000e+01 | +8.000000e+01 | > > I wonder about these worst case measurements of 999 and 998 > milliseconds. It almost looks like you missed one entire period. ^^^^ microseconds
> Could this simply be a bug in the test setup? > > Thanks, > Richard