NSTimer不间断内存增加 - iOS错误？ [英] NSTimer nonstop memory increasing - iOS bug?

问题描述

我正在使用仪器查看iPad应用程序的内存问题 - 查看整体分配的字节数。我的NSTimer导致字节不断增加，而将其注释掉会导致内存使用量保持不变。

I'm figuring out memory issues with an iPad app using instruments - looking at the overall allocated bytes. My NSTimer causes the bytes to constantly increase, while commenting it out causes memory usage to remain static.

来自我的视图控制器的viewDidLoad：

From viewDidLoad of my view controller:

tickTime = 1.0 / 30.0;
tickTimer = [NSTimer scheduledTimerWithTimeInterval:tickTime target: self selector:@selector(update2) userInfo: nil repeats: YES];

方法update2：

- (void) update2 {

}

正如您所看到的，该方法没有任何工作 - 但应用程序的内存使用量不断增长。如果我注释掉我设置计时器的行，内存使用量保持不变。

As you can see there is nothing done in the method whatsoever - yet the memory usage of the app constantly grows. If I comment out the line where I setup the timer, the memory usage remains the same.

这是iOS SDK中的错误吗？有没有人知道一个解决方法？

Is this a bug in the iOS SDK? Does anyone know a workaround?

推荐答案

这是一个pebkac问题 - 我正在研究仪器中的整体字节，这是一个测量应用程序曾使用的所有内存，而不是衡量当前内存的使用情况。

It's a pebkac issue - I was studying the "Overall Bytes" in Instruments, which is a measure of all memory the app has ever used, rather than a measure of current memory usage.

我仍然很好奇如何衡量应用程序当前的总内存使用量 - 如Live Bytes大概是1.5mb - 即使加载了至少20mb的.pngs。

I'm still curious how to measure the app's current total memory usage - as "Live Bytes" is around 1.5mb - even with at least 20mb of .pngs loaded.

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