Re: Re: December build of EMC

Ray Henry wrote:

> From: Ray Henry <rehenry@...>
>
> I didn't have quite the same problem here. The ten step micro drivers I
> use must make a difference. The motors sounded a bit like servos, (sorry
> Jon E) really sweet at high speed. They had an interesting gait at really
> slow speeds.

Yeah, that's what they all think! But, my machine is totally quiet until the
table is moving over 60 IPM, at which time the belt starts to whir and creak.
At really slow speeds, they DON'T have any interesting 'gait'. Just smooth
motion down to .01"/min. Below .01 IPM, the stick/slip friction makes the
motion a little lumpy.

> The rt was a real processor hog. I could see a real screen refresh war
> going on between linux and rt with some pauses from half to whole seconds.
> May be a problem with my patch.

No, you probably have the interrupt rate set too high. Back it off just
a little, to make more time available to the non-real time tasks.

Jon