I'm currently developing a big application with Xamarin.I'm trying to fix some leaks that happens but whenever I use instruments Leaks or Allocation those tools make the app freeze and the recording stops taking anything.

![Allocation stops logging image](https://i.stack.imgur.com/YlLNP.png) 

![Allocation stops logging image2](https://i.stack.imgur.com/xrwsa.png)

My app is in **Debug** mode as stated in this link:  

[Xcode Instruments stops recording when iPad app leaves the splash screen](https://stackoverflow.com/questions/6686881/xcode-instruments-stops-recording-when-ipad-app-leaves-the-splash-screen)

**No particular crash** in the logs and I have tried *Enable NSZombie detection* without success. 

```
Dec 15 21:00:15 SU04 xxxxxxxxx[351] <Warning>: Using ThreadCount: 2
Dec 15 21:00:23 SU04 backboardd[28] <Warning>: CoreAnimation: updates deferred for too long
Dec 15 21:00:23 SU04 backboardd[28] <Warning>: CoreAnimation: timed out fence 2ecaf
Dec 15 21:00:23 SU04 SpringBoard[33] <Warning>: CoreAnimation: failed to receive fence reply: 10004003

```

At the startup, the application have to load a big amount of memory (part from xamarin, part from different SDK) and I suspect that those tools can't handle that. We are turning around 180Mo and 90Mo to 120Mo are loaded at startup but the tools make the app freeze before being fully functionnal.

Nobody of my team is able to profile using those tools so it is coming *(imho)* from the tools or application and not the configuration of my computer. I tried on simulator 7.x and 8.x, ipads 7.x and 8.x with the same result.

Any more idea of what I can try to solve this? Thanks :)