Memory leak - linked to GUI ?

[NicoKiaru]

Hi @bogovicj ,

I noticed that after using BigWarp and closing it programmatically with bigWarp.closeAll() I have some memory not released.

The eclipse memory analyzer shows this suspect trace:

I tested and got the same issue with a 'regular' Fiji and BigWarp:

• start Fiji
• double click on the ImageJ window to triggger GC, you should see around 50 MB occupied
• open two images, in my test around 50 MB each -> trigger GC, you have around 150 MB (at this point, closing the images and triggering GC brings back the memory to 50 MB, as expected)
• then run BigWarp with these two images and put a few landmarks
• close BigWarp
• close the Images in ImageJ
• trigger GC -> 150 MB are still occupied, the images are still in memory

There is at least one reference to the images kept via a LandmarkKeyboardProcessor:

[bogovicj]

@NicoKiaru

Thanks for reporting and for all those details. I'll investigate

[bogovicj]

@NicoKiaru ,
Just a long overdue update. I was able to replicate this easily thanks to the instructions you gave. I spent some time last week tracking this down. So far I haven't been able to solve this despite finding (what I thought) were some promising leads... I'll keep trying.

[NicoKiaru]

Couldn't it be a thread which is not stopped ? What is the solvethread and what is it doing ?

[bogovicj]

@NicoKiaru
Hmm, good idea I'll try.
That thread is what re-solves for the transformation in the background in response to landmark changes.

[NicoKiaru]

@bogovicj any news on this bug ? It's not critical (one can close Fiji once in a while) but it would be nice to have it fixed.

[NicoKiaru]

Hi there,

Any news on this by any chance ? Is there a chance this could be solved in v9 (I'm still stuck to v8) ?

It's keeping a huge about of memory since ini the end it keeps track of the image. It looks like the SolveThread is never closed when BigWarp is closed.

(I'll try to spend some time on my other issues, but it'll be hard within the next week)

[NicoKiaru]

Is this thread stopped somewhere ?

bigwarp/src/main/java/bigwarp/BigWarp.java

Line 542 in a418ad3

solverThread.start();

[bogovicj]

@NicoKiaru

I think / hope that the worst of this leak is fixed here https://github.com/saalfeldlab/bigwarp/tree/memoryLeak
Will stress test a little more next week, but the behavior seems much better when I do the steps you outlined above.

[NicoKiaru]

Hi @bogovicj , I see that the memory leak fix are not in the master branch - do you plan to merge them ?

Cheers