Objective C 处理器定时器
我想比较不同脚本的实际效率。 我目前使用计时器:
NSDate *start = [NSDate date];
// Do something
NSLog(@"Elapsed : %f",[start timeIntervalSinceNow]);
但它不相关,因为它可能取决于在后台工作的操作系统等...... 是否存在真正测量执行脚本所需的处理器周期的东西? 或者等价的东西?
谢谢
I would like to compare the real efficiency of different scripts.
I currently use a timer :
NSDate *start = [NSDate date];
// Do something
NSLog(@"Elapsed : %f",[start timeIntervalSinceNow]);
But it is not relevant since it might depend on the OS working in the background, etc...
Does something that really measure the processor cycles needed to execute the script exist ?
Or something equivalent ?
Thanks
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鲨鱼可能会帮助你。
iPhone 指南: http://rudifa .wordpress.com/2009/09/16/profiling-an-iphone-application-with-shark/
更多信息:为什么 Xcode 中“运行 > 使用性能工具运行 > Shark”总是灰色的?怎么称呼?
Shark might help you.
Guide for iPhone: http://rudifa.wordpress.com/2009/09/16/profiling-an-iphone-application-with-shark/
More info: Why is "Run > Run with Performance Tool > Shark" always gray in Xcode? How to call that?