Analysis Date | JDK | Operating System | CPU Architecture | Debug JVM? |
---|---|---|---|---|
2021-11-25 | OpenJDK17 | Linux | x86 | N |
Results
Switches Identified
Switch Analysis
Name | Type | Description | Default Value | Your Value |
---|---|---|---|---|
CICompilerCount | int | Number of compiler threads to run | CI_COMPILER_COUNT in range(0, max_jint) | 2 |
Analysis | OK |
Name | Type | Description | Default Value | Your Value |
---|---|---|---|---|
ConcGCThreads | uint | Number of threads concurrent gc will use | 0 | 1 |
Analysis | OK |
Name | Type | Description | Default Value | Your Value |
---|---|---|---|---|
CrashOnOutOfMemoryError | boolean | JVM aborts, producing an error log and core/mini dump, on the first occurrence of an out-of-memory error thrown from JVM |
false | true |
Analysis | OK |
Name | Type | Description | Default Value | Your Value |
---|---|---|---|---|
G1ConcRefinementThreads | uint | The number of parallel rem set update threads. Will be set ergonomically by default. |
0 in range(0, (max_jint-1)/wordSize) | 1 |
Analysis | OK |
Name | Type | Description | Default Value | Your Value |
---|---|---|---|---|
G1EagerReclaimRemSetThreshold | uint | Maximum number of remembered set entries a humongous region otherwise eligible for eager reclaim may have to be a candidate for eager reclaim. Will be selected ergonomically by default. |
0 | 8 |
Analysis | OK |
Name | Type | Description | Default Value | Your Value |
---|---|---|---|---|
G1HeapRegionSize | size_t | Size of the G1 regions. | 0 in range(0, 32*M) | 1048576 |
Analysis | OK |
Name | Type | Description | Default Value | Your Value |
---|---|---|---|---|
GCDrainStackTargetSize | int | Number of entries we will try to leave on the stack during parallel gc |
64 in range(0, max_juint) | 64 |
Analysis | OK |
Name | Type | Description | Default Value | Your Value |
---|---|---|---|---|
InitialHeapSize | size_t | Initial heap size (in bytes); zero means use ergonomics | 0 | 18874368 |
Analysis | OK |
Name | Type | Description | Default Value | Your Value |
---|---|---|---|---|
MarkStackSize | size_t | Size of marking stack | NOT_LP64(32*K) LP64_ONLY(4*M) in range(1, (max_jint - 1)) | 4194304 |
Analysis | OK |
Name | Type | Description | Default Value | Your Value |
---|---|---|---|---|
MaxHeapFreeRatio | int | The maximum percentage of heap free after GC to avoid shrinking. For most GCs this applies to the old generation. In G1 and ParallelGC it applies to the whole heap. |
70 in range(0, 100) | 10 |
Analysis | OK |
Name | Type | Description | Default Value | Your Value |
---|---|---|---|---|
MaxHeapSize | size_t | Maximum heap size (in bytes) | ScaleForWordSize(96*M) | 880803840 |
Analysis | OK |
Name | Type | Description | Default Value | Your Value |
---|---|---|---|---|
MaxNewSize | size_t | Maximum new generation size (in bytes), max_uintx means set ergonomically |
max_uintx in range(0, max_uintx) | 528482304 |
Analysis | OK |
Name | Type | Description | Default Value | Your Value | ||||
---|---|---|---|---|---|---|---|---|
MaxRAM | uint64_t | Real memory size (in bytes) used to set maximum heap size |
|
1099997184 | ||||
Analysis | OK |
Name | Type | Description | Default Value | Your Value |
---|---|---|---|---|
MaxRAMPercentage | double | Maximum percentage of real memory used for maximum heap size | 25.0 in range(0.0, 100.0) | 80.000000 |
Analysis | OK |
Name | Type | Description | Default Value | Your Value |
---|---|---|---|---|
MinHeapDeltaBytes | size_t | The minimum change in heap space due to GC (in bytes) | ScaleForWordSize(128*K) in range(0, max_uintx) | 1048576 |
Analysis | OK |
Name | Type | Description | Default Value | Your Value |
---|---|---|---|---|
MinHeapFreeRatio | int | The minimum percentage of heap free after GC to avoid expansion. For most GCs this applies to the old generation. In G1 and ParallelGC it applies to the whole heap. |
40 in range(0, 100) | 5 |
Analysis | OK |
Name | Type | Description | Default Value | Your Value |
---|---|---|---|---|
MinHeapSize | size_t | Minimum heap size (in bytes); zero means use ergonomics | 0 | 8388608 |
Analysis | OK |
Name | Type | Description | Default Value | Your Value | ||||
---|---|---|---|---|---|---|---|---|
NonNMethodCodeHeapSize | int | Size of code heap with non-nmethods (in bytes) |
|
5826188 | ||||
Analysis | OK |
Name | Type | Description | Default Value | Your Value | ||||
---|---|---|---|---|---|---|---|---|
NonProfiledCodeHeapSize | int | Size of code heap with non-profiled methods (in bytes) |
|
122916026 | ||||
Analysis | OK |
Name | Type | Description | Default Value | Your Value | ||||
---|---|---|---|---|---|---|---|---|
ProfiledCodeHeapSize | int | Size of code heap with profiled methods (in bytes) |
|
122916026 | ||||
Analysis | OK |
Name | Type | Description | Default Value | Your Value | ||||
---|---|---|---|---|---|---|---|---|
ReservedCodeCacheSize | int | Reserved code cache size (in bytes) - maximum code cache size |
|
251658240 | ||||
Analysis | OK |
Name | Type | Description | Default Value | Your Value |
---|---|---|---|---|
SegmentedCodeCache | boolean | Use a segmented code cache | false | true |
Analysis | OK |
Name | Type | Description | Default Value | Your Value |
---|---|---|---|---|
SoftMaxHeapSize | size_t | Soft limit for maximum heap size (in bytes) | 0 | 880803840 |
Analysis | OK |
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 |
---|---|---|---|---|
UseFastUnorderedTimeStamps | boolean | Use platform unstable time where supported for timestamps only | false | true |
Analysis | OK |
Name | Type | Description | Default Value | Your Value |
---|---|---|---|---|
UseG1GC | boolean | Use the Garbage-First garbage collector | false | true |
Analysis | OK |