I am cross posting this in Marathon and Mesos lists because both UIs are having this issue, and I figured I'd save time in posting two separate messages.
Basically, in using Firefox, I noticed that over time, my firefox would get to become unusable when I had Marathon and Mesos WebUIs up and running. At first, I thought it was a function of my home (Mac) computer and firefox. But when I started a PoC for work, and my Windows install of firefox had the same issues, I started doing more investigation. First of all, both at home and at work, my Firefox is only dedicated to "cluster" related tasks. Thus, I don't have other tabs that are not Cluster UIs. My typical setup is to have MapR UI, Mesos UI, Marathon UI, Chronos UI, Myriad UI, and Yarn UI all up and running. After about 3-4 hours, my browser would get really slow, and non-responsive. I'd kill all and start again. Rinse repeat. So I did some analysis, and basically found a plugin for Firefox that shows on each tab the amount of memory being used. I found that both Marathon and Mesos UI were the culprits, and things got really bad after just 2-3 hours. With those setup, on Windows, I have the following memory usage: MapR UI: 7.7mb Myriad UI: 9.8mb Yarn: 2.7 mb Chronos 10.2 mb Marathon: 163 mb Mesos UI: 463 mb Both Marathon and Mesos continually climb, slowly, up some, down a few, up some more, but obviously generally trending up. I guess I wanted to toss it out here to see if it's something in my settings, or something that others are seeing. It's a problem for me from a usability standpoint, and I am guessing that it's one of those things that while not a priority for a project, should be looked at. John
