什么时候可以接受的调用GC.Collect？ [英] When is it acceptable to call GC.Collect?

问题描述

一般的建议是，你不应该从你的code调用 GC.Collect的，但什么是例外情况？

The general advise is that you should not call GC.Collect from your code, but what are the exceptions to this rule?

我只能想一些非常特殊的情况下，它可能是有意义的强制垃圾回收。

I can only think of a few very specific cases where it may make sense to force a garbage collection.

的一个例子是弹簧想到是一种服务，该唤醒间隔，执行某些任务，然后睡了很长时间。在这种情况下，它可能是一个好主意，强制收集到prevent即将要被闲置的过程，从持有上比需要更多的内存。

One example that springs to mind is a service, that wakes up at intervals, performs some task, and then sleeps for a long time. In this case, it may be a good idea to force a collect to prevent the soon-to-be-idle process from holding on to more memory than needed.

还有没有其他的情况下是可以接受调用 GC.Collect的？

Are there any other cases where it is acceptable to call GC.Collect?

推荐答案

如果您有充分的理由相信，一个显著组对象 - 特别是那些你怀疑是在代1和2 - 现在有资格进行垃圾回收，而现在是一个合适的时间来收集在小性能损失的条款。

If you have good reason to believe that a significant set of objects - particularly those you suspect to be in generations 1 and 2 - are now eligible for garbage collection, and that now would be an appropriate time to collect in terms of the small performance hit.

这方面的一个很好的例子是，如果你刚刚关闭了大量的形式。你知道，所有的UI控件现在可以被垃圾收集，并在很短的停顿作为可能是封闭的形式不会明显给用户。

A good example of this is if you've just closed a large form. You know that all the UI controls can now be garbage collected, and a very short pause as the form is closed probably won't be noticeable to the user.

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