由于System.OutOfMemoryException的大词典 [英] System.OutOfMemoryException because of Large Dictionary

问题描述

我养大缓存与价值的IEnumerable℃的字典; KeyValuePair<日期时间，双>> 。我从字典中删除项目定期和项目添加到字典中周期性。现在每一次我得到一个System.OutOfMemoryException。我想知道为什么没有垃圾收集器来拯救我？

I keep a large cache in a dictionary with value IEnumerable<KeyValuePair<DateTime, Double>>. I remove items from the dictionary periodically and add items to the dictionary periodically. Every now and again I get a System.OutOfMemoryException. I wanted to know why doesn't the garbage collector come to my rescue?

推荐答案

请记住，一个堆可以得到支离破碎的@Gabe提及。即使你可能有空闲的内存它可能没有大到足以分配字典，当它执行它的调整一大块。

Remember that a Heap can get fragmented as @Gabe mentioned. Even though you might have free memory it might not have a chunk large enough to allocate the dictionary to when it performs it's resize.

也许你可以使用从缓存块模式和实践图书馆 MSDN库链接这将帮助你实现一个良好的缓存。也许你可以选择一个算法，并不动态分配内存，具有固定数量的条目？

Perhaps you could use the caching block from the patterns and practices library MSDN Library Link that will assist you in implementing a good cache. Maybe you could choose an algorithm that doesn't dynamically allocate memory, with a fixed number of entries?

另外请注意，如果没有，你可以使用任何内存然后它与缓存的大小，而不是垃圾收集器的问题。

Also note that if there isn't any memory that you can use then it's a problem with the size of your cache, not the garbage collector.

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