jvm垃圾回收gc算法的相关内容

文章 2024-06-27 来自：开发者社区

JVM垃圾回收的历史演进：从GC算法到垃圾回收器选择

1. 初始阶段：标记-清除算法在Java语言最初发布时，垃圾回收功能相对简单，只提供了基本的标记-清除算法。这种算法会扫描堆中的对象，并标记出活跃对象，然后清除掉未被标记的对象，释放空间。标记-清除算法的主要优点是简单直接，但它存在两个主要问题：内存碎片化和停顿时间过长。 2. 分代收集：复制-清除算法和标记-整理算法随着Java应用程序的发展，研究人员发现大部分对象...

文章 2022-06-13 来自：开发者社区

标记-清除:标记-压缩复制算法:Hotspot分代复制算法bump-the-pointer和TLABs:1.bump-the-pointer:指针碰撞机制会跟踪在eden区创建的最后一个对象，并记录其位置；之后再创建对象，按顺序检查eden空间是否足够，这样每次创建都只需要检查最后一个创建对象。但多线程条件下，就会出现问题，如果加锁，开销太大，因此有了TLABs2.TLABs(Thread-Lo....

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更新时间 2024-06-28 14:53:53

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JVM垃圾回收的历史演进：从GC算法到垃圾回收器选择

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