Java 7 WatchService是否适合其他任何人？ [英] Is Java 7 WatchService Slow for Anyone Else?

问题描述

WatchService看起来是一项很棒的技术，但它在我测试过的OS X和Linux系统上运行速度太慢了。为了增加对伤害的侮辱，它似乎也没有得到所有事件的通知。

WatchService looks like a great technology but its been too slow to be useful on the OS X and Linux systems I've tested on. To add insult to injury, it doesn't seem to get notified of all events either.

这是我自己的代码和Oracle的规范示例的情况。 （ http://docs.oracle.com/javase/tutorial/displayCode.html?code=http://docs.oracle.com/javase/tutorial/essential/io/examples/WatchDir.java ）

This is the case both with my own code and the canonical example from Oracle. (http://docs.oracle.com/javase/tutorial/displayCode.html?code=http://docs.oracle.com/javase/tutorial/essential/io/examples/WatchDir.java)

我认识到OS X OpenJDK端口不确定此功能（参见 https://wikis.oracle.com/display/OpenJDK/Mac+OS+X+Port+Project+Status ）

I recognize that the OS X OpenJDK port is unsure of this functionality (see https://wikis.oracle.com/display/OpenJDK/Mac+OS+X+Port+Project+Status)

有没有人在制作中成功使用它？

Has anyone been using this in production with success?

推荐答案

如果我改变了，我有更好的响应时间

I have much better response times if I change

folder.register(watcher, StandardWatchEventKinds.ENTRY_MODIFY);

到

folder.register(watcher, new WatchEvent.Kind[]{StandardWatchEventKinds.ENTRY_MODIFY}, SensitivityWatchEventModifier.HIGH);

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