JaCoLine - Viewing Historical Command Line #13287
| Analysis Date | JDK | Operating System | CPU Architecture | Debug JVM? |
|---|---|---|---|---|
| 2026-03-17 | OpenJDK8 | Linux | x86 | Y |
Results
Switches Identified
Switch Analysis
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| ms | <size> | set initial Java heap size | 10G | |
| Analysis | OK | |||
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| mx | <size> | set maximum Java heap size | 10G | |
| 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 |
|---|---|---|---|---|
| ParallelRefProcEnabled | boolean | Enable parallel reference processing whenever possible | false | true |
| Analysis | This switch will be removed in the future. It will be Deprecated in OpenJDK26. Obsoleted in OpenJDK27. Expired in OpenJDK28. | |||
| 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 |
|---|---|---|---|---|
| AlwaysPreTouch | boolean | Force all freshly committed pages to be pre-touched | false | true |
| 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 | 30 |
| Analysis | Requires -XX:+UnlockExperimentalVMOptions | |||
| 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 | 40 |
| Analysis | Requires -XX:+UnlockExperimentalVMOptions | |||
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| G1HeapRegionSize | int | Size of the G1 regions. | 0 | 8M |
| 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 | 20 |
| 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 | 5 |
| Analysis | OK | |||
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| G1MixedGCCountTarget | int | The target number of mixed GCs after a marking cycle. | 8 | 4 |
| Analysis | OK | |||
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| InitiatingHeapOccupancyPercent | int | Percentage of the (entire) heap occupancy to start a concurrent GC cycle. It is used by GCs that trigger a concurrent GC cycle based on the occupancy of the entire heap, not just one of the generations (e.g., G1). A value of 0 denotes 'do constant GC cycles'. |
45 | 15 |
| Analysis | OK | |||
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| G1MixedGCLiveThresholdPercent | int | Threshold for regions to be considered for inclusion in the collection set of mixed GCs. Regions with live bytes exceeding this will not be collected. |
85 | 90 |
| Analysis | Requires -XX:+UnlockExperimentalVMOptions | |||
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| G1RSetUpdatingPauseTimePercent | int | A target percentage of time that is allowed to be spend on process RS update buffers during the collection pause. |
10 | 5 |
| Analysis | OK | |||
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| SurvivorRatio | int | Ratio of eden/survivor space size | 8 | 32 |
| Analysis | OK | |||
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| PerfDisableSharedMem | boolean | Store performance data in standard memory | false | true |
| Analysis | OK | |||
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| MaxTenuringThreshold | int | Maximum value for tenuring threshold | 15 | 1 |
| Analysis | OK | |||