On Oct 11, 2007, at 4:36 PM, Matthew Kemp wrote:
@Curt
Is the initial call to Logger.getLogger("foo") expensive or is
every call to
Logger.getLogger("foo") expensive?
Each call at least involves a Hashtable.get() call which would
involve a block on a mutex and hash table lookup. The first call
would also have additional overhead for creating and inserting the
node in the hierarchy. Depends on the rest of the method if that is
proportionately expensive or cheap.
If you have a function that is called frequently and where the log
requests do not typically satisfy the threshold, then it could be
highly beneficial to get the logger once and use it repeatedly. If
you have a function that is not called frequently or where most of
the log requests do satisfy the threshold or the method is time
consuming, then the proportional cost of the Logger.getLogger() call
might be inconsequential.
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