K 10
svn:author
V 4
jeff
K 8
svn:date
V 27
2008-04-17T09:56:01.000000Z
K 7
svn:log
V 442
 - Add a metric to describe how busy a processor has been over the last
   two ticks by counting the number of switches and the load when
   sched_clock() is called.
 - If the busy metric exceeds a threshold allow the idle thread to spin
   waiting for new work for a brief period to avoid using IPIs.  This
   reduces the cost on the sender and receiver as well as reducing wakeup
   latency considerably when it works.

Sponsored by:	Nokia

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