gtk_mesa_tests: Fix calculation in %

[hdiethelm]

#4082 changed the time values from cycles to ns.

This broke the calculation of % values and the CPU clock is not needed any more.

Discovered here: #4199

TBD: Remove the CPU Speed read fully? I would say yes.

[zz912]

TBD: Remove the CPU Speed read fully? I would say yes.

I say yes too.

[hdiethelm]

^Rebased to master

[grandixximo]

Thanks for this. I checked the calculation and it is correct: tmax and period are both in ns from HAL, so the CPU clock is indeed no longer needed.

I built and ran the panel from the branch. Python compiles and the glade file validates, so no blockers from my side.

One nitpick: the two GtkAdjustment objects adj_cpu_speed_nic and adj_cpu_speed_servo at the top of gtk_mesa_tests.glade (lines 4-13) are now orphaned; the spin buttons that referenced them were removed. Please delete them.

[hdiethelm]

One nitpick: the two GtkAdjustment objects adj_cpu_speed_nic and adj_cpu_speed_servo at the top of gtk_mesa_tests.glade (lines 4-13) are now orphaned; the spin buttons that referenced them were removed. Please delete them.

Thanks, fixed + tested.

1. force push: Fix
2. force push: Rebase master