blocks|key|3501787|text|如果您自下而上地查看时间配置文件图，并将-count在库中花费的任何时间计入调用者，这应该会得到您想要的结果。它可以让你看到由于-count而花费了多少时间(例如，在执行该方法时，以及该方法完成其工作所需的任何事情上)，还可以让你找出调用该方法的位置。您在-count上花费这么多时间的原因可能不是因为它花费了很长时间，而是因为您使用它太频繁了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3501788|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

If you view the time profile graph bottom-up, and charge any time -count spends in libraries to its callers, that should give you what you want. It lets you see how much time is spent because of -count (i.e. both in executing that method, and anything the method needs to get its job done) and also lets you find out where you're calling the method. It's possible that the reason you spend so much time in -count is not because it takes long, but because you're doing it too often.

blocks|key|3501831|text|至少在函数级别上花费的时间正是Instruments为您提供的。使用DTrace，您甚至可以更深入地挖掘。也许你可以在my+blog+post上看看这个。希望这能把事情弄清楚。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3501832|例如，您可以很容易地编写一个DTrace脚本来打印count调用的内存消耗。|3501833|干杯，托尔斯顿|3501834|entityMap|0|LINK|mutability|MUTABLE|url|http://vafer.org/blog/20080812182921^0|1N|C|0|0|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@$A|Q|B|R|1|S]]|C|$]]|$1|D|3|E|5|6|7|T|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|U|8|@]|9|@]|C|$]]|$1|H|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|I|$J|$5|K|L|M|C|$N|O]]]]

The time spend at least on the function level is exactly what Instruments is giving you. With DTrace you can even dig deeper than that. Maybe checkout <a href="http://vafer.org/blog/20080812182921" rel="nofollow noreferrer">my blog post</a> about this. That should hopefully clear things up.

You could easily write a DTrace script to print out the memory consumption of the count call for example.

cheers,
Torsten

blocks|key|280932|text|您可以按cmd-f来搜索符号。确保“自动展开”复选框处于打开状态，这样它就会进入树中。您可能需要打开Window+->显示高级设置。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|280933|找到符号后，右键单击它，您将有一些选项：|280934|280935|Focus+Symbol:这将使您筛选到仅对您选择的符号的调用，并在|unordered-list-item|280936|保留调用堆栈方式下:这将允许您查看对该符号的所有调用，并过滤掉其他所有|280937|280938|完成后，您可以右键单击并“全部取消聚焦”或“全部恢复”。这些命令最终会修改高级设置中的"callstack+data+mining“部分。把这玩意儿弄乱。|280939|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|E|3|F|5|G|7|R|8|@]|9|@]|A|$]]|$1|H|3|I|5|G|7|S|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|T|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|N|$]]

You can hit cmd-f to search for a symbol. Make sure the "auto expand" checkbox is on so it goes down into the tree. You may need to turn on Window -> Show Advanced Settings.

Once you find the symbol, right click on it and you have some options:

<ul>
<li>Focus Symbol: this will let you filter down to just the calls to the symbol you selected and below</li>
<li>Retain Callstacks with: this will let you see all the calls to the symbol and filter out everything else</li>
</ul>

When you are done you can right click and "unfocus all" or "restore all". These commands end up modifying the "callstack data mining" section in the advanced settings. Fool around with that.

I'm new to Shark, and I was wondering if it's possible to narrow down a time sample to one specific method?

Let's say I'd like to, just for the sake of it, know how much resources have been used on calls to the method 'count' for all NSArray (or subclasses) instances.

Shark: how to filter down to one specific method

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我刚接触Shark，我想知道是否有可能将时间样本缩小到一种特定的方法？假设我想知道在调用所有NSArray (或子类)实例的'count‘方法时使用了多少资源。

问Shark:如何过滤到一种特定的方法
EN

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