简体繁体 English

老一代物件的统计数据？

[英]Statistics of objects in old generation?

原文 2013-02-27 12:18:22 0 1 java/ garbage-collection/ jvm/ jvisualvm/ jmap

Is there any tool to view object statistics on the different generations of a JVM Heap? 是否有任何工具可以查看JVM堆的不同代的对象统计信息？ I'm looking into a potential memory leak and need some data over the different generations. 我正在研究潜在的内存泄漏，需要不同代的一些数据。 The use case I have is to take a snapshot over object in old generations, wait, and then take another snapshot to compare. 我的用例是在旧代中拍摄对象的快照，等待，然后拍摄另一个快照进行比较。

JVisualVM offers statistics over created object, but that doesn't help me much as I don't see whether or not a particular object is being promoted or tenured faster than it should. JVisualVM提供了有关已创建对象的统计信息，但这对我没有多大帮助，因为我没有看到特定对象是否正在被提升或终身比它应该更快。

Jmap offers statistics over the different generations, but not on an object basis. Jmap提供不同代的统计信息，但不提供基于对象的统计信息。 In that tool I can only see that the old generation is growing... 在那个工具中，我只能看到老一代正在成长......

1 个解决方案

Run your app on Yourkit .It has got generation view tab.You can take snapshots of your heap and compare what objects are still alive between snapshots . 在Yourkit上运行你的应用程序。它有生成视图选项卡。你可以拍摄堆的快照，并比较快照之间仍然存在的对象。

Documentation 文档

Here is an useful answer by @JT . 这是@JT的有用答案。

For more info check this link 有关更多信息，请查看此链接

统计生成 - Statistics Generation

直接分配给Old Generation的巨大对象的大小 - Size of Huge Objects directly allocated to Old Generation

Java ParNew Collection将对象移动到旧一代 - Java ParNew Collection moving objects to Old Generation

是什么导致物体从年轻一代转移到老一代 - What cause Objects to move from Young Generation to Old Generation

G1 GC什么时候直接分配old generation的对象 - When will G1 GC allocate objects in old generation directly

为什么次要 GC 清除老年代对象 - Why Old generation objects clearing up by minor GC

如何转储Java对象来自JVM堆旧代？ - How to dump Java objects came from JVM heap old generation?

主要或完整 GC 是否会从老一代中删除活动对象？ - Does major or full GC remove live objects from old generation?

如果在年轻一代上标记了所有死亡对象之后，我们知道它们是否全部死亡，为什么我们需要对旧一代中的不可达对象进行特定搜索？ - Why do we need a specific search for unreachable objects in Old Generation if we know all dead objects after marking them on the Young Generation?

为什么老一代不好？ - Why is old generation bad?

暂无

暂无

声明:本站的技术帖子网页，遵循CC BY-SA 4.0协议，如果您需要转载，请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.

相关问题 统计生成 - Statistics Generation 直接分配给Old Generation的巨大对象的大小 - Size of Huge Objects directly allocated to Old Generation Java ParNew Collection将对象移动到旧一代 - Java ParNew Collection moving objects to Old Generation 是什么导致物体从年轻一代转移到老一代 - What cause Objects to move from Young Generation to Old Generation G1 GC什么时候直接分配old generation的对象 - When will G1 GC allocate objects in old generation directly 为什么次要 GC 清除老年代对象 - Why Old generation objects clearing up by minor GC 如何转储Java对象来自JVM堆旧代？ - How to dump Java objects came from JVM heap old generation? 主要或完整 GC 是否会从老一代中删除活动对象？ - Does major or full GC remove live objects from old generation? 如果在年轻一代上标记了所有死亡对象之后，我们知道它们是否全部死亡，为什么我们需要对旧一代中的不可达对象进行特定搜索？ - Why do we need a specific search for unreachable objects in Old Generation if we know all dead objects after marking them on the Young Generation? 为什么老一代不好？ - Why is old generation bad?

相关标签

粤ICP备18138465号 © 2020-2024 STACKOOM.COM