Application metrics UI addendum crashes browser

[marksumm]

I have 19 application metrics enabled for a container (they are the JVM metrics exposed by Spring Boot Actuator).

Attempting to browse to the UI page for the container in cAdvisor v0.37.0 causes a fast memory leak and browser crash. Only the "Application Metrics" title bar is visible at the bottom of the page.

This is affecting both Firefox and Chromium, and the issue is repeatable.

[marksumm]

You can easily reproduce this issue by scraping application metrics from the /actuator/prometheus endpoint of an instance of pierreroudier/micrometer-prometheus (for example). Then, visit the cAdvisor UI page for the container and the usual metrics are displayed, as well as the "Application Metrics" title. However, something in the process of drawing graphs for the application metrics is exploding before any more content is rendered. Even trying to use developer tools to identify the issue is difficult, due to how quickly the browser becomes unresponsive.

[iwankgb]

Is this possibly related to #2626?

[flyinprogrammer]

This fix is here, just need someone to show up: #2627

[marksumm]

I just built the latest master and unfortunately it still crashes my browser. I don't think this is a rendering issue - I'm seeing hundreds of thousands of background HTTP requests to /docker/{id}. The browser is actually running out of sockets.