JaCoLine - Viewing Historical Command Line #6426
| Analysis Date | JDK | Operating System | CPU Architecture | Debug JVM? |
|---|---|---|---|---|
| 2022-12-12 | OpenJDK11 | Linux | x86 | N |
Results
Switches Identified
Switch Analysis
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| mx | <size> | set maximum Java heap size | 12288m | |
| Analysis | OK | |||
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| ms | <size> | set initial Java heap size | 7372m | |
| Analysis | Duplicate switch. This is overridden by -Xms12288m. | |||
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| ss | <size> | set java thread stack size | 256k | |
| Analysis | OK | |||
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| MetaspaceSize | int | Initial threshold (in bytes) at which a garbage collection is done to reduce Metaspace usage |
12*M | 128m |
| Analysis | OK | |||
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| MaxMetaspaceSize | size_t | Maximum size of Metaspaces (in bytes) | max_uintx | 256m |
| 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 |
|---|---|---|---|---|
| UseZGC | boolean | Use the Z garbage collector | false | true |
| Analysis | Duplicate switch. This is overridden by -XX:-UseZGC. | |||
| 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) | 30 |
| 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) | 50 |
| Analysis | OK | |||
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| log | <opts> | control JVM logging, use -Xlog:help for details | gc*:file=/opt/logs/100027304/gc.log:tags,time,uptime,pid:filecount=5,filesize=32M | |
| Analysis | OK | |||
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| UseZGC | boolean | Use the Z garbage collector | false | false |
| 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 |
|---|---|---|---|---|
| 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 |
|---|---|---|---|---|
| ParallelGCThreads | uint | Number of parallel threads parallel gc will use | 0 | 8 |
| Analysis | OK | |||
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| ConcGCThreads | uint | Number of threads concurrent gc will use | 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) | 8m |
| Analysis | OK | |||
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| HeapDumpBeforeFullGC | boolean | Dump heap to file before any major stop-the-world GC | false | true |
| Analysis | OK | |||
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| ms | <size> | set initial Java heap size | 12288m | |
| Analysis | OK | |||
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| ActiveProcessorCount | int | Specify the CPU count the VM should use and report as active | -1 | 8 |
| Analysis | OK | |||
| 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 |
|---|---|---|---|---|
| OmitStackTraceInFastThrow | boolean | Omit backtraces for some 'hot' exceptions in optimized code | true | false |
| Analysis | OK | |||
| Name | Type | Description | Default Value | Your Value |
|---|---|---|---|---|
| HeapDumpPath | string | When HeapDumpOnOutOfMemoryError is on, the path (filename or directory) of the dump file (defaults to java_pid<pid>.hprof in the working directory) |
NULL | /opt/logs/100027304 |
| Analysis | OK | |||