Grafana Web-Interface: Out Of Memory

Hi! We’re experiencing out-of-memory caused crashes of the web-interface since upgrading to 11.5.2, and would appreciate any help or pointers. Details below:

  • What Grafana version and what operating system are you using?
    Grafana v11.5.2 (598e0338d5)
    Ubuntu 24.04 LTS

  • What are you trying to achieve?
    Set up a “Join by Field” transformation for a panel that runs 4 queries against an InfluxDB (with a modest data set, and only sampling a short timeframe)

  • How are you trying to achieve it?
    I click on “+ Add another transformation”, select “Join by field”, select mode “INNER”. As soon as I select the field (a number field in my case), the issue occurs.

  • What happened?
    Chrome’s used RAM rapidly starts rising from around 2GB to over 8GB in a matter of 4-5 seconds. Chrome’s CPU usage surges from ~1% to ~80%. Meanwhile, the web interface remains frozen. After this, the chrome tab shows an “out of memory” exception.
    I did observe the server’s RAM usage, and there’s no discernible change at all. It seems to be a front-end issue.

  • What did you expect to happen?
    I expected it not to freeze, consume all available RAM and crash. Everything worked fine before the upgrade, when we were still on an older version (I think 10.X, need to check which version exactly)

  • Did you receive any errors in the Grafana UI or in related logs? If so, please tell us exactly what they were.