Note that maxtasksperchild is new in 2.7.
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@ -1543,20 +1543,21 @@ with the :class:`Pool` class.
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*initializer* is not ``None`` then each worker process will call
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``initializer(*initargs)`` when it starts.
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*maxtasksperchild* is the number of tasks a worker process can complete
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before it will exit and be replaced with a fresh worker process, to enable
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unused resources to be freed. The default *maxtasksperchild* is None, which
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means worker processes will live as long as the pool.
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.. versionadded:: 2.7
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*maxtasksperchild* is the number of tasks a worker process can complete
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before it will exit and be replaced with a fresh worker process, to enable
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unused resources to be freed. The default *maxtasksperchild* is None, which
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means worker processes will live as long as the pool.
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.. note::
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Worker processes within a :class:`Pool` typically live for the complete
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duration of the Pool's work queue. A frequent pattern found in other
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systems (such as Apache, mod_wsgi, etc) to free resources held by
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workers is to allow a worker within a pool to complete only a set
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amount of work before being exiting, being cleaned up and a new
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process spawned to replace the old one. The *maxtasksperchild*
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argument to the :class:`Pool` exposes this ability to the end user.
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Worker processes within a :class:`Pool` typically live for the complete
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duration of the Pool's work queue. A frequent pattern found in other
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systems (such as Apache, mod_wsgi, etc) to free resources held by
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workers is to allow a worker within a pool to complete only a set
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amount of work before being exiting, being cleaned up and a new
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process spawned to replace the old one. The *maxtasksperchild*
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argument to the :class:`Pool` exposes this ability to the end user.
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.. method:: apply(func[, args[, kwds]])
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