Shark & ​​MallocDebug for iPhone Applications

Question

I am trying to optimize an iPhone game that I am developing that uses the Cocos2D-iphone infrastructure.

I want to use Shark to measure performance, but "Run-> Start with Performance Tool-> Shark" is disabled in Xcode ("Tool leaks" work fine). I configured the Generate Profiling Code assembly, tried to build both for the device and for the simulator, but without luck, the shark still remains disabled.

I also tried to launch Shark manually (outside of Xcode), and it was also inefficient. In the "Sampling → Network / iPhone Sample" section, I selected the "Public Network Profiling" radio object and put a check mark next to my listed device. When I pressed the start button, nothing happened.

Shark works great for desktop applications. I am using Shark 4.7.0 (244.4) and Xcode 3.1.3. I am creating an iphone application on SDK version 2.2.1.

Is there an app I need to install on my iPhone to get Shark to work, or is there something else I'm missing?

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