Performance and debugging
os_signpost intervals
Someone reports that search results take too long to appear. Instead of printing timestamps, what would you use to measure each stage?
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Performance and debuggingShort answerBasics
All you've got is vague feedback that "the app is slow." How do you approach that with In…
#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 meas…
#measurement