如果你想要从一大堆数据中取得有用的信息，按照常规做法，你需要做两件事：首先，小心翼翼地保存数据，对数据进行贴标签、整理、分类;
Used to be that if you wanted to wrest usable information from a big mess of data, you needed two things: First, a meticulously maintained database, tagged and sorted and categorized.
histo产生一个对象文本柱状图，现在在堆中大量引用，由特定类型消耗的字节总数分类。
Histo produces a text histogram of the objects currently strongly referenced in the heap, sorted by the total number of bytes consumed by that particular type.
不要随意把它们叠成一堆——创造一个简单的分类系统(按字母顺序是最简单的，如果你是极客，用十六进制分类也行)。
Don't have a bunch of files stacked somewhere - create a simple filing system (alphabetical is easiest, although you could sort by hexadecimal instead if you're a geek).
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