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S0  Survivor space 0 utilization as a percentage of  the space's current capacity.S1  Survivor space 1 utilization as a percentage of  the space's current capacity.E  Eden space utilization as a percentage of  the space's current capacity.O  Old space utilization as a percentage of  the space's current capacity.P  Permanent space utilization as a percentage of  the space's current capacity.YGC  Number of young generation GC events.YGCT  Young generation garbage collection time.FGC  Number of full GC events.FGCT  Full garbage collection time.GCT  Total garbage collection time.