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Snailclimb merged 1 commit into from
Feb 18, 2022
Merged

修复错别字 #1538

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2 changes: 1 addition & 1 deletion docs/java/jvm/jvm-intro.md
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Expand Up @@ -314,7 +314,7 @@ JVM的参数非常之多，这里只列举比较重要的几个，通过各种
|------|------------|------------|------|
| -Xms | 初始堆大小 | 物理内存的1/64(<1GB) |默认(MinHeapFreeRatio参数可以调整)空余堆内存小于40%时，JVM就会增大堆直到-Xmx的最大限制.
| -Xmx | 最大堆大小 | 物理内存的1/4(<1GB) | 默认(MaxHeapFreeRatio参数可以调整)空余堆内存大于70%时，JVM会减少堆直到 -Xms的最小限制
| -Xmn | 年轻代大小(1.4or lator) | |注意：此处的大小是（eden+ 2 survivor space).与jmap -heap中显示的New gen是不同的。整个堆大小=年轻代大小 + 老年代大小 + 持久代（永久代）大小.增大年轻代后,将会减小年老代大小.此值对系统性能影响较大,Sun官方推荐配置为整个堆的3/8
| -Xmn | 年轻代大小(1.4or later) | |注意：此处的大小是（eden+ 2 survivor space).与jmap -heap中显示的New gen是不同的。整个堆大小=年轻代大小 + 老年代大小 + 持久代（永久代）大小.增大年轻代后,将会减小年老代大小.此值对系统性能影响较大,Sun官方推荐配置为整个堆的3/8
| -XX:NewSize | 设置年轻代大小(for 1.3/1.4) | |
| -XX:MaxNewSize | 年轻代最大值(for 1.3/1.4) | |
| -XX:PermSize | 设置持久代(perm gen)初始值 | 物理内存的1/64 |
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