Shapira, Yoav wrote:
This is a common misconception: System.gc() is merely a suggestion to the VM to run collection. The VM is not obliged to run it then, i.e. this is not a hard directive. It should never be relied upon. With JDK 1.4, there's a runtime parameter to ignore System.gc() calls and that parameter may be on by default in the future.
Also, calling System.gc() is unnecessary in allmost all cases it is used. The VM does a far better job in determining when the gc should run than most programmers could. Only if you know your way around in the internals of the VM and you know that it will not run a gc cycle that would beneficial, you can call System.gc() to politely ask the VM to do so. Still no garantees, though.
In any case, although a call to System.cg() will most likely no hurt your performance, you should never ever rely on it.
Phil
-- And on the seventh day, He exited from append mode. (Book of create(2), line 255)
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