[MonoTouch] Monotouch issue with Xcode's Instruments

[René Ruppert]

Hi Rolf,

 

What is the „VM Tracker“ tool? 

 

René

 

Von: monotouch-bounces at lists.ximian.com
[mailto:monotouch-bounces at lists.ximian.com] Im Auftrag von Rolf Bjarne
Kvinge
Gesendet: Donnerstag, 22. März 2012 01:12
An: Morph268
Cc: monotouch at lists.ximian.com
Betreff: Re: [MonoTouch] Monotouch issue with Xcode's Instruments

 

Hi,

 

I think you're looking only at the Live Bytes, but they don't tell the whole
story.

 

You need to look at the VM tracker tool, and take heap snapshots there. Then
you look at the heapshots, and in particular look at the Dirty Size column
and the Memory Tag 70 row (Memory Tag 70 is image data, which is usually
where issues are).

 

I hope this helps,

Rolf

 

On Tue, Mar 20, 2012 at 7:03 AM, Morph268 <angriawan at hotmail.com> wrote:

I am having problem getting the correct memory allocation data on iOS
application written using MonoTouch.

I wrote a simple application that periodically adds bunch objects to a list.
After I run Instruments on the app; the total memory allocation is peaked at
2.09MB. This doesn't seem right because I know I allocated more than that.

I kept increasing the number of objects in the list to around 38000 objects;
at that time it looks like iOS automatically kill the app because it reaches
the max limit. The reading for total allocation in Instruments is still
around 2mb.

My question is that is there any setting that I need to set before running
the instrument.

Things that I would like to mention:
- I tried to build both Release and Debug.
- I deployed the app to device and run the instrument against it.
- I have the latest version of Monotouch and Monodevelop
- I have XCode SDK 5.1 installed.

Any help is greatly appreciated.

Thank you much, AA

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