circlee/gc_option.tsv

## gc_option.tsv

          
            Option and Default Value
            Description

            
              -XX:+UseG1GC
              Use the Garbage First (G1) Collector

            
              -XX:MaxGCPauseMillis=n
              Sets a target for the maximum GC pause time. This is a soft goal, and the JVM will make its best effort to achieve it.

            
              -XX:InitiatingHeapOccupancyPercent=n
              Percentage of the (entire) heap occupancy to start a concurrent GC cycle. It is used by GCs that trigger a concurrent GC cycle based on the occupancy of the entire heap, not just one of the generations (e.g., G1). A value of 0 denotes 'do constant GC cycles'. The default value is 45.

            
              -XX:NewRatio=n
              Ratio of old/new generation sizes. The default value is 2.

            
              -XX:SurvivorRatio=n
              Ratio of eden/survivor space size. The default value is 8.

            
              -XX:MaxTenuringThreshold=n
              Maximum value for tenuring threshold. The default value is 15.

            
              -XX:ParallelGCThreads=n
              Sets the number of threads used during parallel phases of the garbage collectors. The default value varies with the platform on which the JVM is running.

            
              -XX:ConcGCThreads=n
              Number of threads concurrent garbage collectors will use. The default value varies with the platform on which the JVM is running.

            
              -XX:G1ReservePercent=n
              Sets the amount of heap that is reserved as a false ceiling to reduce the possibility of promotion failure. The default value is 10.

            
              -XX:G1HeapRegionSize=n
              With G1 the Java heap is subdivided into uniformly sized regions. This sets the size of the individual sub-divisions. The default value of this parameter is determined ergonomically based upon heap size. The minimum value is 1Mb and the maximum value is 32Mb.
	Option and Default Value	Description
	-XX:+UseG1GC	Use the Garbage First (G1) Collector
	-XX:MaxGCPauseMillis=n	Sets a target for the maximum GC pause time. This is a soft goal, and the JVM will make its best effort to achieve it.
	-XX:InitiatingHeapOccupancyPercent=n	Percentage of the (entire) heap occupancy to start a concurrent GC cycle. It is used by GCs that trigger a concurrent GC cycle based on the occupancy of the entire heap, not just one of the generations (e.g., G1). A value of 0 denotes 'do constant GC cycles'. The default value is 45.
	-XX:NewRatio=n	Ratio of old/new generation sizes. The default value is 2.
	-XX:SurvivorRatio=n	Ratio of eden/survivor space size. The default value is 8.
	-XX:MaxTenuringThreshold=n	Maximum value for tenuring threshold. The default value is 15.
	-XX:ParallelGCThreads=n	Sets the number of threads used during parallel phases of the garbage collectors. The default value varies with the platform on which the JVM is running.
	-XX:ConcGCThreads=n	Number of threads concurrent garbage collectors will use. The default value varies with the platform on which the JVM is running.
	-XX:G1ReservePercent=n	Sets the amount of heap that is reserved as a false ceiling to reduce the possibility of promotion failure. The default value is 10.
	-XX:G1HeapRegionSize=n	With G1 the Java heap is subdivided into uniformly sized regions. This sets the size of the individual sub-divisions. The default value of this parameter is determined ergonomically based upon heap size. The minimum value is 1Mb and the maximum value is 32Mb.