explanation about Profiler

Questions & Answers
1

Hello everyone

I’ve created an application for android which use the Vuforia plugin (version 3.0.9) for showing some 3d model for 25 frame markers.

After using the application for a relative long period of time my application become really slow and cannot really use it after (display bug appear).

I guess I have some memory leak so after searching on the internet and into the unity3d portal I saw that Profiler give a lot of information about memory, CPU, GPU and so on.

I’ve already read the document about Profiler (Unity - Manual: Profiler overview) but I don’t a understand a thing about detecting memory leak.

I may be stupid but I don’t know how to interpret the result I get on the Profiler.

Basically, what I would like to detect is if some parameter have a memory leak issue and/or if a specific texture use more and more memory when changing its texture (I’m using Resources.Load<>()).

I’ve already tried to use System.GC.Collect() in some part of my code and use Resources.UnloadUnusedAssets() without any result.

Could you please explain to me simply how can I use Profiler for detecting memory leak?

ps:I have both Unity pro for pc/mac and android and running the Profiler using the Editor.

I really thank you in advance for your help.

2

Use the detailed view:

3

Following the advice of M. Graham Dunnnett, I’ve checked the memory part with Detailed but something is bugging me and I don’t understand the result.

From what I’ve seen:
-Other : doesn’t really change, stay at 0.58GB (once at 0.59GB but returned to 0.58GB)

-Assets : this is the one I don’t understand, globally growing up, start at 380.4Mb when appli just start, grow up when changing Texture/sprite (first grow was about 570Mb) then after finishing the AR part, I’m calling Resources.UnloadUnusedAssets (); then System.GC.Collect() but the memory didn’t “returned” to 380.4Mb, memory was around 401Mb so the more I’m playing with the camera/AR part the more the Assets memory grow up.

-Not saved : doesn’t really change, at start the memory is around 42Mb and after some use it grows up a little (45.5Mb)

-Scene memory : doesn’t change, stay around 16.2Mb

-Builtin Resources : doesn’t really change, stay around 14.4Mb and 15Mb

(memory test was done using the Editor with the plateform set to Android)

so my problem concern the “Assets” part but I don’t understand why the memory still keep growing event after the call of Resources.UnloadUnusedAssets (); and System.GC.Collect()

Do I missed something when trying to release memory?

When changing a texture I’m doing it this way:

 Texture myTexture = (Texture)Resources.Load("05/maps/"+texname);
 item.material.mainTexture = myTexture;

Is there something wrong with this way of changing texture?

I really thank you in advance for your help