Analysis Date | JDK | Operating System | CPU Architecture | Debug JVM? |
---|---|---|---|---|
2021-10-15 | OpenJDK11 | Linux | x86 | N |
Results
Switches Identified
Switch Analysis
Name | Type | Description | Default Value | Your Value |
---|---|---|---|---|
ms | <size> | set initial Java heap size | 5500m | |
Analysis | OK |
Name | Type | Description | Default Value | Your Value |
---|---|---|---|---|
mx | <size> | set maximum Java heap size | 5500m | |
Analysis | OK |
Name | Type | Description | Default Value | Your Value |
---|---|---|---|---|
OnOutOfMemoryError | list of strings | Run user-defined commands on first java.lang.OutOfMemoryError | kill | |
Analysis | OK |
Name | Type | Description | Default Value | Your Value |
---|---|---|---|---|
MaxDirectMemorySize | uint64_t | Maximum total size of NIO direct-buffer allocations | 0 in range(0, max_jlong) | 2000m |
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 |
---|---|---|---|---|
ParallelGCThreads | uint | Number of parallel threads parallel gc will use | 0 | 4 |
Analysis | OK |
Name | Type | Description | Default Value | Your Value |
---|---|---|---|---|
ConcGCThreads | uint | Number of threads concurrent gc will use | 0 | 3 |
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) | 250 |
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 |
---|---|---|---|---|
HeapDumpOnOutOfMemoryError | boolean | Dump heap to file when java.lang.OutOfMemoryError is thrown | false | true |
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 | /tmp |
Analysis | OK |
Name | Type | Description | Default Value | Your Value |
---|---|---|---|---|
StartAttachListener | boolean | Always start Attach Listener at VM startup | false | true |
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 |
---|---|---|---|---|
log | <opts> | control JVM logging, use -Xlog:help for details | gc*,safepoint:file=/tmp/gc-%p-%t.log:time,level,tags:filecount=2,filesize=20m\\ | |
Analysis | OK |