Unity uses more and more memory

narf03 · August 22, 2016, 11:57pm

I have the following simple code in a brand new project, it only has a camera object, and in this camera object contains this script, it does not have any other thing, no other script. The main purpose is to track unity memory usage, it logs Profiler.GetTotalAllocatedMemory(), Profiler.GetTotalReservedMemory(), Profiler.GetTotalUnusedReservedMemory() every minutes. And the result is the number keep getting bigger and bigger overtime, I am wondering if its the reason why the application crash or being killed my android OS ?

using UnityEngine;
using System.Collections;

public class TrackMemoryUsage : MonoBehaviour {
    long lngLastExecuted = System.DateTime.Now.Ticks;

    void Start() {
        Application.runInBackground = true;
    }

    void Update () {
        if(System.DateTime.Now.Ticks - lngLastExecuted > 600000000L) {
            Log();
            lngLastExecuted = System.DateTime.Now.Ticks;
        }
    }

    void Log() {
        using (System.IO.StreamWriter sw = System.IO.File.AppendText(System.IO.Path.Combine(Application.persistentDataPath, "log.txt"))) {
            sw.WriteLine(string.Format("{0}{1,15:smile:6}{2,15:smile:6}{3,15:smile:6}", System.DateTime.Now.ToString(), Profiler.GetTotalAllocatedMemory(), Profiler.GetTotalReservedMemory(), Profiler.GetTotalUnusedReservedMemory()));
        }
    }
}

The log file after running for like 9 hours. I replaced all the space with underscores so it looks better.
Log file (very long)

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8/23/2016_7:32:44_AM_______99957344______319160320______219202976
8/23/2016_7:33:44_AM______100053152______319160320______219107168
8/23/2016_7:34:44_AM______100358448______319160320______218801872
8/23/2016_7:35:44_AM______100430792______319160320______218729528
8/23/2016_7:36:44_AM______100496960______319160320______218663360
8/23/2016_7:37:44_AM______100564936______319160320______218595384
8/23/2016_7:38:44_AM______100896928______335937536______235040608
8/23/2016_7:39:44_AM______100965048______335937536______234972488
8/23/2016_7:40:44_AM______101033128______335937536______234904408
8/23/2016_7:41:44_AM______101369144______335937536______234568392
8/23/2016_7:42:44_AM______101438208______335937536______234499328
8/23/2016_7:43:44_AM______101502624______335937536______234434912
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8/23/2016_7:45:44_AM______101897384______335937536______234040152
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shawn_1 · August 23, 2016, 10:53am

Does the Profiler window show anything revealing?

narf03 · August 24, 2016, 5:52pm

If i open profiler, memory usage will instantly multiply by 4-5 times

2016-08-25_01:40:46____46013624___193396736___147383112
2016-08-25_01:41:46____46219480___193331200___147111768
2016-08-25_01:42:46____46183080___193331200___147148120
2016-08-25_01:43:46___201368720___344326144___142957424 ← profiler just started
2016-08-25_01:44:46___201374296___344326144___142951848
2016-08-25_01:45:46___201292704___344326144___143033440
2016-08-25_01:46:58___201642360___344326144___142683784
2016-08-25_01:47:58___201279312___344326144___143046832
2016-08-25_01:48:58___201345360___344326144___142980784
2016-08-25_01:49:58___201255528___344326144___143070616
2016-08-25_01:50:58___201322112___344326144___143004032
2016-08-25_01:51:58___201387536___344326144___142938608 ← profiler closed
2016-08-25_01:52:58___201314504___344326144___143011640
2016-08-25_01:53:58___201250520___344326144___143075624

Perhaps i should leave it running for days, see if it will reach a certain amount and stop.

narf03 · August 24, 2016, 11:47pm

I think you can ignore this, i wasnt able to recreate the scenario again, now memory does not keep growing.

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