JaCoLine - Viewing Historical Command Line #3449

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Analysis Date JDK Operating System CPU Architecture Debug JVM?
2021-11-25 OpenJDK8 Linux x86 N
Results
Switches Identified
-XX:CMSInitiatingOccupancyFraction=95
-XX:+CMSScavengeBeforeRemark
-XX:+FlightRecorder
-XX:+HeapDumpOnOutOfMemoryError
-XX:InitialHeapSize=8589934592
-XX:MaxHeapSize=8589934592
-XX:NewRatio=4
-XX:OldPLABSize=16
-XX:+PrintGC
-XX:+PrintGCDateStamps
-XX:+PrintGCDetails
-XX:+PrintGCTimeStamps
-XX:SurvivorRatio=2
-XX:+UnlockCommercialFeatures
-XX:+UseCMSInitiatingOccupancyOnly
-XX:+UseCompressedClassPointers
-XX:+UseCompressedOops
-XX:+UseConcMarkSweepGC
-XX:+UseParNewGC
Switch Analysis
Name Type Description Default Value Your Value
CMSInitiatingOccupancyFraction int Percentage CMS generation occupancy to start a CMS collection
cycle. A negative value means that CMSTriggerRatio is used		 -1 95
Analysis This switch will be removed in the future. It will be Obsoleted in OpenJDK14. Expired in OpenJDK15.
Name Type Description Default Value Your Value
CMSScavengeBeforeRemark boolean Attempt scavenge before the CMS remark step false true
Analysis This switch will be removed in the future. It will be Obsoleted in OpenJDK14. Expired in OpenJDK15.
Name Type Description Default Value Your Value
FlightRecorder boolean Enable Flight Recorder false true
Analysis This switch is not available until OpenJDK11. Your analysis was for OpenJDK8
Name Type Description Default Value Your Value
HeapDumpOnOutOfMemoryError boolean Dump heap to file when java.lang.OutOfMemoryError is thrown false true
Analysis OK
Name Type Description Default Value Your Value
InitialHeapSize int Initial heap size (in bytes); zero means use ergonomics 0 8589934592
Analysis OK
Name Type Description Default Value Your Value
MaxHeapSize int Maximum heap size (in bytes) ScaleForWordSize(96*M) 8589934592
Analysis OK
Name Type Description Default Value Your Value
NewRatio int Ratio of old/new generation sizes 2 4
Analysis OK
Name Type Description Default Value Your Value
OldPLABSize int Size of old gen promotion LAB's (in HeapWords) 1024 16
Analysis OK
Name Type Description Default Value Your Value
PrintGC boolean Print message at garbage collection false true
Analysis OK
Name Type Description Default Value Your Value
PrintGCDateStamps boolean Print date stamps at garbage collection false true
Analysis OK
Name Type Description Default Value Your Value
PrintGCDetails boolean Print more details at garbage collection false true
Analysis OK
Name Type Description Default Value Your Value
PrintGCTimeStamps boolean Print timestamps at garbage collection false true
Analysis OK
Name Type Description Default Value Your Value
SurvivorRatio int Ratio of eden/survivor space size 8 2
Analysis OK
Name Type Description Default Value Your Value
UnlockCommercialFeatures true
Analysis Switch not found in any JDK
Name Type Description Default Value Your Value
UseCMSInitiatingOccupancyOnly boolean Only use occupancy as a criterion for starting a CMS collection false true
Analysis This switch will be removed in the future. It will be Obsoleted in OpenJDK14. Expired in OpenJDK15.
Name Type Description Default Value Your Value
UseCompressedClassPointers boolean Use 32-bit class pointers in 64-bit VM.
lp64_product means flag is always constant in 32 bit VM		 false true
Analysis OK
Name Type Description Default Value Your Value
UseCompressedOops boolean Use 32-bit object references in 64-bit VM.
lp64_product means flag is always constant in 32 bit VM		 false true
Analysis OK
Name Type Description Default Value Your Value
UseConcMarkSweepGC boolean Use Concurrent Mark-Sweep GC in the old generation false true
Analysis This switch will be removed in the future. It will be Obsoleted in OpenJDK14. Expired in OpenJDK15.
Name Type Description Default Value Your Value
UseParNewGC boolean Use parallel threads in the new generation false true
Analysis OK
Created by Chris Newland (@chriswhocodes)  |  Data from VM Options Explorer  |  Built with Eclipse Jersey and PostgreSQL