Arthas vmoption(查看和修改 JVM里诊断相关的option)
文章目录
- 二、命令列表
- 2.1 jvm相关命令
- 2.1.6 vmoption(查看和修改 JVM里诊断相关的option)
- 举例1:vmoption 查看所有的选项
- 举例2:vmoption MinHeapFreeRatio 查看指定的选项
二、命令列表
2.1 jvm相关命令
2.1.6 vmoption(查看和修改 JVM里诊断相关的option)
参数说明:
命令 | 说明 |
---|---|
vmoption | 查看所有的选项 |
vmoption MinHeapFreeRatio | 查看指定的选项 |
moption MinHeapFreeRatio 50 | 更新指定的选项 |
举例1:vmoption 查看所有的选项
基础语法
:
vmoption
[arthas@18139]$ vmoptionKEY VALUE ORIGIN WRITEABLE
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------HeapDumpBeforeFullGC false DEFAULT true HeapDumpAfterFullGC false DEFAULT true HeapDumpOnOutOfMemoryError false DEFAULT true HeapDumpPath DEFAULT true CMSAbortablePrecleanWaitMillis 100 DEFAULT true CMSWaitDuration 2000 DEFAULT true CMSTriggerInterval -1 DEFAULT true PrintGC true DEFAULT true PrintGCDetails true VM_CREATION true PrintGCDateStamps true VM_CREATION true PrintGCTimeStamps false DEFAULT true PrintGCID false DEFAULT true PrintClassHistogramBeforeFullGC false DEFAULT true PrintClassHistogramAfterFullGC false DEFAULT true PrintClassHistogram false DEFAULT true MinHeapFreeRatio 40 DEFAULT true MaxHeapFreeRatio 70 DEFAULT true PrintConcurrentLocks false DEFAULT true UseAppCDS false DEFAULT true FlightRecorder true MANAGEMENT true StartFlightRecording DEFAULT true MemoryRestriction none DEFAULT true ResourceManagement false DEFAULT true ResourceManagementSampleInterval -1 DEFAULT true
[arthas@18139]$
举例2:vmoption MinHeapFreeRatio 查看指定的选项
基础语法
:
vmoption MinHeapFreeRatio
[arthas@18139]$ vmoption MinHeapFreeRatioKEY VALUE ORIGIN WRITEABLE
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------MinHeapFreeRatio 40 DEFAULT true
[arthas@18139]$