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objective-cxcodetimeprofileinstruments

How does one profile non-CPU intensive method calls in Instruments?

If I have the following method is there a way to use Instruments 4.0 to tell me that it took one second?

- (IBAction)sleepOneSecond:(id)sender 
{
    sleep(1);
}

Right now I am using this to get the desired effect:

- (IBAction)waitOneSecond:(id)sender 
{
    NSDate * startDate = [NSDate date];
    sleep(1);
    NSLog(@"%s took %lf seconds", __FUNCTION__, 
          [[NSDate date] timeIntervalSinceDate:startDate]);
}

Time Profiler and Sampler just give time on the CPU which does not help in this case.

Solution

  • With the Time Profiler Instrument, make sure it's set to "All Sample Counts" rather than "Running Sample Times" under "Sample Perspective".