JaCoLine - Viewing Historical Command Line #13338

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Analysis Date JDK Operating System CPU Architecture Debug JVM?
2026-05-14 OpenJDK21 - Any - x86 N
Results
Switches Identified
-Xms8192m
-Xmx8192m
-XX:SoftRefLRUPolicyMSPerMB=50
-XX:ReservedCodeCacheSize=1024m
-XX:+UseCodeCacheFlushing
-XX:SegmentedCodeCache
-XX:+UseG1GC
-XX:MaxGCPauseMillis=200
-XX:G1NewSizePercent=10
-XX:G1MaxNewSizePercent=30
-XX:G1HeapRegionSize=16m
-XX:G1ReservePercent=15
-XX:G1HeapWastePercent=5
-XX:ParallelGCThreads=8
-XX:ConcGCThreads=2
-XX:CICompilerCount=4
-XX:+TieredCompilation
-XX:TieredStopAtLevel=1
-XX:MaxMetaspaceSize=1024m
-XX:InitialCodeCacheSize=256m
-XX:+UseStringDeduplication
-XX:+UseCountedLoopSafepoints
-XX:LoopStripMiningIter=1000
Switch Analysis
Name Type Description Default Value Your Value
ms <size> set initial Java heap size 8192m
Analysis OK
Name Type Description Default Value Your Value
mx <size> set maximum Java heap size 8192m
Analysis OK
Name Type Description Default Value Your Value
SoftRefLRUPolicyMSPerMB int Number of milliseconds per MB of free space in the heap 1000 in range(0, max_intx) 50
Analysis OK
Name Type Description Default Value Your Value
ReservedCodeCacheSize int Reserved code cache size (in bytes) - maximum code cache size
CPUDefault
x8648*M
 1024m
Analysis OK
Name Type Description Default Value Your Value
UseCodeCacheFlushing boolean Remove cold/old nmethods from the code cache true true
Analysis OK
Name Type Description Default Value Your Value
SegmentedCodeCache boolean Use a segmented code cache false
Analysis Missing +/- on switch on boolean switch.
Name Type Description Default Value Your Value
UseG1GC boolean Use the Garbage-First garbage collector false true
Analysis OK
Name Type Description Default Value Your Value
MaxGCPauseMillis int Adaptive size policy maximum GC pause time goal in millisecond,
or (G1 Only) the maximum GC time per MMU time slice		 max_uintx - 1 in range(1, max_uintx - 1) 200
Analysis OK
Name Type Description Default Value Your Value
G1NewSizePercent int Percentage (0-100) of the heap size to use as default
minimum young gen size.		 5 in range(0, 100) 10
Analysis OK
Name Type Description Default Value Your Value
G1MaxNewSizePercent int Percentage (0-100) of the heap size to use as default
maximum young gen size.		 60 in range(0, 100) 30
Analysis OK
Name Type Description Default Value Your Value
G1HeapRegionSize size_t Size of the G1 regions. 0 in range(0, NOT_LP64(32*M) LP64_ONLY(512*M)) 16m
Analysis OK
Name Type Description Default Value Your Value
G1ReservePercent int It determines the minimum reserve we should have in the heap
to minimize the probability of promotion failure.		 10 in range(0, 50) 15
Analysis OK
Name Type Description Default Value Your Value
G1HeapWastePercent int Amount of space, expressed as a percentage of the heap size,
that G1 is willing not to collect to avoid expensive GCs.		 5 in range(0, 100) 5
Analysis OK
Name Type Description Default Value Your Value
ParallelGCThreads uint Number of parallel threads parallel gc will use 0 8
Analysis OK
Name Type Description Default Value Your Value
ConcGCThreads uint Number of threads concurrent gc will use 0 2
Analysis OK
Name Type Description Default Value Your Value
CICompilerCount int Number of compiler threads to run CI_COMPILER_COUNT in range(0, max_jint) 4
Analysis OK
Name Type Description Default Value Your Value
TieredCompilation boolean Enable tiered compilation
CPUDefault
x86COMPILER1_PRESENT(true) NOT_COMPILER1(false)
 true
Analysis OK
Name Type Description Default Value Your Value
TieredStopAtLevel int Stop at given compilation level 4 in range(0, 4) 1
Analysis OK
Name Type Description Default Value Your Value
MaxMetaspaceSize size_t Maximum size of Metaspaces (in bytes) max_uintx 1024m
Analysis OK
Name Type Description Default Value Your Value
InitialCodeCacheSize int Initial code cache size (in bytes)
CPUDefault
x862304*K
 256m
Analysis OK
Name Type Description Default Value Your Value
UseStringDeduplication boolean Use string deduplication false true
Analysis OK
Name Type Description Default Value Your Value
UseCountedLoopSafepoints boolean Force counted loops to keep a safepoint false true
Analysis OK
Name Type Description Default Value Your Value
LoopStripMiningIter int Number of iterations in strip mined loop 0 in range(0, max_juint) 1000
Analysis OK
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