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+cpulimit is a simple program that attempts to limit the cpu usage of a
+process (expressed in percentage, not in cpu time). This is useful to
+control batch jobs, when you don't want them to eat too much cpu. It does
+not act on the nice value or other scheduling priority stuff, but on the
+real cpu usage. Also, it is able to adapt itself to the overall system
+load, dynamically and quickly.