LA>
  > Surely there must be some simple method of giving up idle cycles
  > without getting put to sleep ?
LA>

  No, because it's a contradiction in terms.  If you don't go to sleep
  then you are still using CPU time.  Giving up idle cycles involves *not*
  using CPU time (when you don't have any *real* work to do).

  > JdeBP <
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