Issue with hanging web application in browser when annotations save is called.

[vskubriev]

Specifically, with the current task, we had a problem - the interface freezes when saving a frame (frames through autosave). The server is powerful enough and its la is very low. Therefore, I believe that the problem is precisely in the client part of the markup executable in the browser. Apparently, the interface freezes at the time of autosave or manual saving by Ctrl+S. The entire task contains 3.5 thousand frames. Frames can contain up to 80 objects of type polyline. The entire task almost completely marked.

It can also be noted that:

1. Previously (when marking up images in this task just started): the open menu button and autosave function did not cause web ui hanging.
2. Also, another task with a small fraction of similarly marked images works without problems.
3. First pre-main page with LOADING shows a long time compared to other tasks.wed
4. Saving in another tasks with bounding boxes and smaller frames is running without hanging.

How can I help myself in solving/analyze this problem?

[vskubriev]

[vskubriev]

[vskubriev]

[vskubriev]

When is beta 1.0 roughly planned?

[nmanovic]

@vskubriev , we will look in the problem. Could you please provide some parameters of your task? How many annotations do you have and its type? Please post label specification?

[nmanovic]

@vskubriev , we will try to fix the issue till next release but cannot promise.

[nmanovic]

@vskubriev , you are welcome to contribute!

[vskubriev]

@vskubriev , we will look in the problem. Could you please provide some parameters of your task? How many annotations do you have and its type? Please post label specification?

Task is about 3.5k images with 1920*1200 pixels. Most of images are marked up.

What do you mean by "its type" - type of objects is polylines.
What do you mean by "label specification" - Where I can find it?

[vskubriev]

Latest info from one of out markupers:

When he switched to marking up earlier frames (almost at the very beginning), saving became much faster in the same folder.

[bsekachev]

@vskubriev

Hi, what chrome version have you used to profile?

[vskubriev]

@vskubriev

Hi, what chrome version have you used to profile?

google-chrome-stable:amd64=78.0.3904.108-1 on Ubuntu 18.04 (when i did profiling)

[bsekachev]

Results for me with a task where 50k polygons
Just Array.includes() is not a bottleneck in my case.
It's quite strange.

Anyway, I've found some performance problems here.
PR above should resolve them.

[bsekachev]

@vskubriev

Please, try the PR.
And let us know if it helps.

[vskubriev]

Thank you. We can apply this update only next year. Happy new year.

[bsekachev]

@vskubriev

Hi, what is the news?

[vskubriev]

@bsekachev Sorry for a delay. We has installed cvat (Couple of fixes in "save annotations" #1000) at the end of past year. There are no any issues with hanging. We assume that the problem is fixed.

[bsekachev]

@vskubriev

Great, let's close this issue in this case.