JaCoLine - Viewing Historical Command Line #13280
| Analysis Date | JDK | Operating System | CPU Architecture | Debug JVM? |
|---|---|---|---|---|
| 2026-03-05 | OpenJDK26 | Linux | x86 | N |
Results
Switches Identified
Switch Analysis
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| ms | <size> | set minimum and 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 | (Deprecated) 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 |
|---|---|---|---|---|
| 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 |
|---|---|---|---|---|
| UnlockExperimentalVMOptions | boolean | Enable normal processing of flags relating to experimental features |
false | true |
| 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 |
|---|---|---|---|---|
| AlwaysPreTouch | boolean | Force all freshly committed pages to be pre-touched | false | true |
| Analysis | OK | |||
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| G1NewSizePercent | uint | Percentage (0-100) of the heap size to use as default minimum young gen size. |
5 in range(0, 100) | 30 |
| Analysis | OK | |||
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| G1MaxNewSizePercent | uint | Percentage (0-100) of the heap size to use as default maximum young gen size. |
60 in range(0, 100) | 40 |
| 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)) | 8M |
| Analysis | OK | |||
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| G1ReservePercent | uint | It determines the minimum reserve we should have in the heap to minimize the probability of promotion failure. |
10 in range(0, 50) | 20 |
| Analysis | OK | |||
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| G1HeapWastePercent | uint | 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 |
|---|---|---|---|---|
| G1MixedGCCountTarget | int | The target number of mixed GCs after a marking cycle. | 8 in range(0, max_uintx) | 4 |
| Analysis | OK | |||
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| InitiatingHeapOccupancyPercent | uint | The percent occupancy (IHOP) of the current old generation capacity above which a concurrent mark cycle will be initiated Its value may change over time if adaptive IHOP is enabled, otherwise the value remains constant. In the latter case a value of 0 will result as frequent as possible concurrent marking cycles. A value of 100 disables concurrent marking. Fragmentation waste in the old generation is not considered free space in this calculation. (G1 collector only) |
45 in range(0, 100) | 15 |
| Analysis | OK | |||
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| G1MixedGCLiveThresholdPercent | uint | 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 in range(0, 100) | 90 |
| Analysis | OK | |||
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| G1RSetUpdatingPauseTimePercent | uint | A target percentage of time that is allowed to be spend on processing remembered set update buffers during the collection pause. |
10 in range(0, 100) | 5 |
| Analysis | OK | |||
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| SurvivorRatio | int | Ratio of eden/survivor space size | 8 in range(1, max_uintx-2) | 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 | uint | Maximum value for tenuring threshold | 15 in range(0, markWord::max_age + 1) | 1 |
| Analysis | OK | |||