[racket] cpu usage of DrRacket

From: Jos Koot (jos.koot at telefonica.net)
Date: Wed Dec 14 07:52:05 EST 2011

I see that after starting up, DrRacket constantly uses between 40 and 60 %
of my two CPUs, even with empty definitions window and before doing anything
by myself.
I use:
Welcome to DrRacket, version [3m]
without debugging and without preserving stacktrace.
Language determined by #lang line.
Disabling online expansion does not decrease CPU usage.
What may be the reason for DrRacket to use so much CPU at moments I would
expect it to be idle?
Thanks, Jos
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