Controlling memory usage is a battle that requires constant vigilance, and it's hard. It's difficult to measure memory usage in a reliable, repeatable way such

Controlling memory usage is a battle that requires constant vigilance, and it's hard. It's difficult to measure memory usage in a reliable, repeatable way such that we could use it to prevent regressions. Additionally, small regressions can add up over time, making it hard to pinpoint any one thing that could be backed out to improve memory usage.