iPhone/iPod 文件系统速度
有人有 iPhone/iPod 文件系统分析的硬数据吗? 我对阅读比写作更感兴趣。
我正在考虑进行一些测试,但我想我应该检查一下是否有更聪明和/或更富有时间的人已经这样做了。
具体来说,我对许多小文件与较少大文件之间的速度差异以及各代 iP* 设备之间的差异感兴趣。
另一个问题是读取文件的 ZIP 压缩是否值得以解压缩为代价进行权衡,或者在多大的数据大小时存在“收支平衡”点。
Does anyone out there have hard data from profiling the iPhone/iPod filesystem? I'm more interested in reading than writing.
I was thinking of running a few tests, but thought I'd check to see if someone smarter and/or more time-rich had already done so.
Specifically I'm interested in speed difference between many small files versus fewer big files, and the differences between the various generations of iP* devices.
Another question is whether or not ZIP compression of read files is worth the tradeoff of decompression, or at what data size there is a "break-even" point.
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我的迈克·阿什 (Mike Ash) 在 NSBlog 上写道:
这是网址:
http://www.mikeash。 com/?page=pyblog/performance-comparisons-of-common-operations-iphone-edition.html
From NSBlog, written my Mike Ash:
Here's the URL:
http://www.mikeash.com/?page=pyblog/performance-comparisons-of-common-operations-iphone-edition.html