JaCoLine - Viewing Historical Command Line #13186
| Analysis Date | JDK | Operating System | CPU Architecture | Debug JVM? |
|---|---|---|---|---|
| 2025-12-23 | OpenJDK21 | Linux | x86 | N |
Results
Switches Identified
Switch Analysis
| 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 |
|---|---|---|---|---|
| DisableExplicitGC | boolean | Ignore calls to System.gc() | false | true |
| Analysis | OK | |||
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| G1ConcRefinementThreads | uint | The number of parallel remembered 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 |
|---|---|---|---|---|
| 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 | 1048576000 |
| Analysis | OK | |||
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| MarkStackSize | size_t | Size of marking stack | NOT_LP64(64*K) LP64_ONLY(4*M) in range(1, (max_jint - 1)) | 4194304 |
| Analysis | OK | |||
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| MaxHeapSize | size_t | Maximum heap size (in bytes) | ScaleForWordSize(96*M) | 1048576000 |
| Analysis | OK | |||
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| MinHeapSize | size_t | Minimum heap size (in bytes); zero means use ergonomics | 0 | 1048576000 |
| Analysis | OK | |||
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| PrintCommandLineFlags | boolean | Print flags specified on command line or set by ergonomics | false | true |
| 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 |
|---|---|---|---|---|
| THPStackMitigation | boolean | If THPs are unconditionally enabled on the system (mode 'always'), the JVM will prevent THP from forming in thread stacks. When disabled, the absence of this mitigation allows THPs to form in thread stacks. |
true | false |
| 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 |
|---|---|---|---|---|
| UseG1GC | boolean | Use the Garbage-First garbage collector | false | true |
| Analysis | OK | |||
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| UseStringDeduplication | boolean | Use string deduplication | false | true |
| Analysis | OK | |||