Showing results for 
Show  only  | Search instead for 
Did you mean: 

Why does browser.tabs.unloadOnLowMemory set false by default?

Not applicable

In my environment (Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:106.0) Gecko/20100101 Firefox/106.0), the feature to unload inactive tabs was disabled by default. Is there a reason for this, such as a significant performance impact?


Making moves

This is pretty late but hopefully still useful to you.

According to gsvelto, one of the developers, it is because the detection of low memory doesn't work:


Yes it does, we've disabled tab unloading on Linux because low-memory detection just didn't work. We will re-enabled it sometimes down the line but only to avoid swap, not crashes. The OOM killer does already a good job with this change and we feel no need to do anything further (besides optimizing memory usage, but that's system-agnostic).