jProfiler 需要多少内存来分析大小为 X 的堆转储? [英] How much memory does jProfiler need to analyze a heap dump of size X?

问题描述

我的堆大小为 X(= 5 GB).我应该为 jprofiler 分配多少来有效地分析这个堆?

I have a heap size of X (= 5 giga bytes). How much should I allocate for jprofiler to efficiently analyze this heap?

推荐答案

我建议使用 Eclipse MAT 查看堆转储.它在大小为 X 的堆转储的内存要求方面做得更好，因为它在磁盘上创建中间索引文件，而不是将整个内容吸收到它自己的内存中.大多数工具需要 X 的多个 N 才能打开堆转储，其中 N 通常 >= 2.此外，如果您要给它们超过 2g，请确保启动在 64 位中运行 MAT 或 JProfiler 的 Java 进程记忆力.

I would recommend using Eclipse MAT to view the heap dump. It does a much better job in terms of memory requirements for a heap dump of size X because it creates intermediate index files on disk instead of sucking up the whole thing into it's own memory. Most tools require some multiple N of X to open the heap dump where N is usually >= 2. Also, make sure to start the Java process that runs MAT or JProfiler in 64-bit if you're going to give them more than 2g of memory.

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