I can't remember what it was like without Modbus. I'll do some more 
tests later.

Les

On 28/03/11 13:30, Stephen Wille Padnos wrote:
> I haven't looked at the code, but I wonder if there's some busy-waiting
> or very short duration usleep()s in the serial receive function(s).
>
> Do you see the same load if you have CL running without Modbus?
>
> - Steve


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