JaCoLine - Viewing Historical Command Line #3449
| Analysis Date | JDK | Operating System | CPU Architecture | Debug JVM? |
|---|---|---|---|---|
| 2021-11-25 | OpenJDK8 | Linux | x86 | N |
Results
Switches Identified
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 | This switch will be removed in the future. It will be Deprecated in OpenJDK25. Obsoleted in OpenJDK26. | |||
| 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 | |||