Unexplained Render.com Memory Leak

You’re welcome to all developers that user Render.com. I recently discovered that their interactive shells in the dashboard had a memory leak. Memory would not be returned to your service if a shell crashed in your browser. And those shells did not play well with ad blockers like uBlock Origin. As such I’ve found Render in-browser shells could crash quite often. For several years we noticed that server memory grew over time in ways we could never explain, even with a lot of troubleshooting. Sometimes the leak would saturate all of our server’s memory. A server restart would clear things out, so eventually we even had background jobs set up to restart our servers a few times a day to “fix” the memory leak. Last week I finally sat down and dug a little deeper when a lesser-used server started crashing right as I was taking a rare chance to work on it. Processes galore! I’m told this has now been fixed up. Perhaps now I can reduce some of our serve allocation… Reply by email

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