High memory usage on asset with lots of JSON GET requests

Anthias
1

I have been looking into an issue with my in house dashboard I built and Anthias. Short of the long there is a single asset webpage that makes lots of JSON GET request’s that vary from every 10 seconds to every 15 min depending on the data they return. Hardware is a Pi 4B 8 GB RAM.

I have noticed a slow but steady uptick in memory usage when said asset is displayed until I get the black screen (BlackSOD haha). The web UI remain accessible the whole time.

If I load a simple page such as example .com I do not see this issue and the memory stays steady so I assume it has something to do with all GET’s the page does.

I plan to install Anthias on top of the PI OS this week vs the Balena images so I can grab logs.

For now has anyone seen this issue before and was it an issue in your JS, something with how Anthias does the GC or something else? Maybe I am pushing Anthias beyond it’s limits.

I think my issue is related to these posts:

2

Are you on the latest release (from master)?

Also, web pages often leak memory. The longer you leave them up, the more likely you are to hit it. A quick workaround is to add an image in the playlist rotation to clear that. Alternatively, you can try the new ‘reload’ feature, but it isn’t as bullet proof.

3

Yes I am on the 2026.05.0 tagged release.

I have added a image to the rotation so I will monitor. Regardless its not a bad idea so the screen does not get burn in. I did try the reload feature but it did not see to fix it but will reassess.

When looking at the logs on thing I did see, might be my issue but looked odd, was in the anthias viewer logs if you have one asset and the duration is set to 0 it just spams the log to end with updates every second.

4

Humm the picture does not seem to have worked, up about 15% in a few hours.

As well after disabling the resource memory does not appear to immediately free up.

image
image1318×566 44.6 KB

image
image1890×472 44.9 KB

5

After a few days the memory still remains unchanged while only displaying a single picture. Any other ideas or should I open up a bug report.

6

I can confirm this behavior. In my case it’s an online leaderboard that does refresh the score data with JSON.

The memory consumption is slowly creeping upwards. I have added a short video of 26 seconds as an inbetween asset. This slows down the growth of the memory consumption. However it’s not completely gone.

7

Hmm let me try to see if I can reproduce this. The release we cut today does include some memory optimizations, but let me try anyways.

8

Thanks for the update. I’ll do my own testing as well to see if I’m still able to recreate it.

9

So it looks like something’s wrong in the latest release. The pre-built images don’t seem to get past the splash screen and the manual install doesn’t properly pull up the tagged releases.

10

@venterce just to close the loop on this, I have not seen this issue show up in the new builds.

I tested a few variations of my screen and the memory issues seem to have been corrected in one of the PR’s.

11

Awesome - thank you for the update.