2 Replies
      Latest reply: Sep 27, 2016 1:39 PM by grzywacz RSS
      rlavaee Level 1 Level 1 (0 points)

        I am trying to instrument an application on my iphone to measure cache performance (using Counters on Instruments). I was initially unable to profile iOS applications, but follwoing https://forums.developer.apple.com/thread/16242 , I am now able to profile using my macbook air. Now when I add any hardware events to the profiling run, even though Instruments starts tracing, it does not show any sampled events. Basically, I see the timer in Instruments increasing while the Counters trace is blank (no bars plotted).

        Surprisingly, I am able to profile when no hardware event is added. I see recorded CPU times bars in the Counters trace.

         

        Here are my device info:

        Desktop: Macbook air 2014 with OS X El Capitan 10.11.6

        Iphone: iphone6s with iOS 9.3.2

        Instruments version: 7.3.1

        hardware event: Adding any hardware event results in blank trace