Someone reports that search results take too long to appear. Instead of printing timestamps, what would you use to measure each stage?
With os_signpost (OSSignposter) you mark start and end intervals, then see their length and overlap on the os_signpost or Points of Interest track in Instruments, lined up with Time Profiler to find the cause.
Performance and debuggingShort answerBasics
All you've got is vague feedback that "the app is slow." How do you approach that with…
#instruments
Performance and debuggingMultiple choiceIntro
Tapping a certain button freezes the screen for about a second. To see which function on…
#instruments
Performance and debuggingShort answerBasics
You're asked to "optimize this function, it's slow." What do you do before you touch the…
#measurement
Performance and debuggingMultiple choiceIntro
You want to measure app performance as the basis for optimization. Which are correct…
#measurement