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java memmory tester

 
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suggest a good java tester for memmory leaks .GC Ok?..how to use System.gc()..frequent?.tel me the overhead produced by gc() call.
 
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realize that a call to System.gc() doesn't guarantee anything. It simply requests that the Garbage Collector do its thing.
I've used JProbe when dealing with memory leaks, it might help you to identify where your problem is coming from.
 
basha khan
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do anyone knows what System.gc() doing?.why sun is hiding it's original purpose.
sun says that 'gc() only force the garbage collector to run'.how it's forcing?.a lot can be done if sun specifies what gc() actually doing.
how much cuncurrent threads can "EFFECTIVELY"(not theoratically) handle a java program(load)?.
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