Massive memory leak in "Not Saved" (Unity 2017.1)

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Ok, So I don't know much about memory, but this seems odd.

I'm currently working on a medium sized project, but the scene setup is very simple. I noticed that, when working on it for a long time, the framerate drops from an initial average of 70-80 fps to about 40-50. So I checked the profiler and found this in the memory section: "Not Saved", along with "Other", were both taking up about 4.5 GB of memory. The "Other" seemed OK, but under "Not Saved/Mesh" there was one "Shared UI Mesh" taking up more than 1.5 GB of memory! There were also a bunch of other, empty entries, but those weren't even remotely that big.

I did some research on this topic, but found nothing useful really. And no, I am not using any plugins like NGUI or MeshBaker. As for setting Text.text, I use it, but not every frame (e.g when player clicks something, you get the idea).

So my question to you is: Does anyone of you also experience this? Have you found a fix for it? Any advice about what i should do to track down the memory leak?

I am using Unity 2017.1.0f3 on Windows 10; 16 GB RAM, SSD, i7 4790k, GTX 1080. I highly doubt my hardware is bottlenecking anything.

I'm looking forward to any sort of answer ;)

Sorry, image upload not working for me atm.

Edit: It really is some sort of problem with the UI System (I'm using Unity's new (4.6) UI System). It looks like too many buttons (I used them for inventory slots) causes massive frame drops. With a bunch of buttons etc. I get 40 fps, if I disable all the UI in my game, I get 90+fps. Anyone knowing more about this?

Answer 1

Answer by Kidga · Jul 27, 2017 at 09:19 AM

Got the same problem but on iOs

Look at Mesh size after launch alt text And this is the size after 3 levels( 3 times reloading scene)

screen-shot-2017-07-27-at-113858-am.png (77.3 kB)

screen-shot-2017-07-27-at-120538-pm.png (94.4 kB)

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fede9948 · Jul 27, 2017 at 10:56 AM 0

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Yeah looks just like what I experience. Hope we find a solution soon!

Answer 2

Answer by zakirshikhli · Aug 21, 2017 at 09:42 AM

Same issue. After bug report Unity Developers promised it will fixed on 2017.2 Stable version...

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Vapid-Linus · Sep 18, 2017 at 08:51 AM 1

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Can you provide a link to where they said this?

fede9948 · Sep 18, 2017 at 09:45 AM 0

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At least we know Unity knows about the bug. I would also be interested in the link though.

Answer 3

Answer by Ledda · Sep 01, 2017 at 01:56 AM

I had same problem and I'm pretty sure that it's a bug, When new scene starts I noticed memory leak problem 1 Gb in less of two minutes to be precise. The problem derive from my canvas UI, I deactivated Pixel Perfect checkBox and magically the memory leak is disappeared.

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fede9948 · Sep 18, 2017 at 09:42 AM 0

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Yes, I found that as well. It doesn't eli$$anonymous$$ate the problem, but certainly reduces the memory leak. What I noticed as well was that using Text.text also contributes to the memory leak.

Answer 4

Answer by Babare · Aug 11, 2017 at 06:53 AM

I have the same exact issue, which started happening after upgrade to 2017.

I use Text.text a lot in my game, and the SharedUI Mesh leak is massive. (like 1GB in 10 minutes )

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Answer 5

Answer by Babare · Jul 28, 2017 at 11:21 AM

Dowgrading to 5.6.2 fixed it on my side.

The issue is also present on 2017.2.b4

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fede9948 · Jul 28, 2017 at 07:19 PM 0

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Sounds like a plan, but can you actually use a Unity 2017.1 project in a previous version? Doesn't Unity always display a message saying you can't go back before upgrading?

ElevenGame fede9948 · Nov 01, 2017 at 09:54 AM 0

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Yeah, but I guess you can always do that manually: Creating a new project in the older version and just copying the asset files. In the worst case you might have to rebuild some setups/prefabs and of course the project settings.

Massive memory leak in "Not Saved" (Unity 2017.1)

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