android garbage collector lingo

Trying to find some information on the GC. In my l开发者_开发百科og i see these entrie often:

08-19 22:35:27.513: DEBUG/dalvikvm(1981): GC_EXPLICIT freed 93 objects / 3160 bytes in 999ms
08-19 22:35:28.256: DEBUG/dalvikvm(2331): GC_FOR_MALLOC freed 15082 objects / 523496 bytes in 47ms

whats the difference between the 2?

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When you call System.gc(), a GC_EXPLICIT garbage collection will happen some time in the future. Malloc is a C term and function for allocating memory. A GC for malloced memory will be the system cleaning up your dead java variables because they are no longer in use. (This is done automatically as needed).