Java堆外内存排查小结 - 小姐姐味道



Java堆外内存排查小结 - 小姐姐味道

这几天遇到一个比较奇怪的问题，觉得有必要和大家分享一下。我们的一个服务，运行在docker上，在某个版本之后，占用的内存开始增长，直到docker分配的内存上限，但是并不会OOM。版本的更改如下：

  • 升级了基础软件的版本
  • 将docker的内存上限由4GB扩展到8GB
  • 上上个版本的一项变动是使用了EhCache的Heap缓存
  • 没有读文件，也没有mmap操作

使用jps 查看启动参数，发现分配了大约3GB的堆内存


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