In a message dated 6/7/2007 2:27:38 A.M. Central Daylight Time,  
[EMAIL PROTECTED] writes:
>Trace interrupt processing simply changes CR 12 to point to  the
beginning of the next buffer for that CPU.  There is no copying  done
at this point.
 
Ah, that makes more sense that my guess as to how it worked.  So the  effect 
is a 4K window moving through the large trace buffer.  Much less  overhead 
than copying the 4K buffer every time it fills up and reusing the same  4K 
buffer.
 
Bill  Fairchild
Plainfield, IL





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