This is inherent in GCed environments, and firefox/etc aren't tuned to enforce minimizing memory utilization because it saps perf. So, you end up having to do

This is inherent in GCed environments, and firefox/etc aren't tuned to enforce minimizing memory utilization because it saps perf. So, you end up having to do it yourself. Run a tab discard plugin, and then keep an about:memory window open and click the minimize memory utilization button on a regular basis (probably a plugin/etc to do that, but I just trigger it manually every once in a while). And that is on machines that have 32-64G of ram.