Myth: uBlock consumes several or several dozen GB of RAM

garry-ut99 2024-04-09 15:03:50 +00:00
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I've seen a couple of instances of people claiming uBlock Origin (uBO) eats several or several dozen gigabytes of RAM.
Examples:
- [Ublock origin uses 26.6gb of memory on firefox #994](https://github.com/uBlockOrigin/uBlock-issues/issues/994)
- [Using 24+Gb of virtual memory on Firefox/Ubuntu 20.04 #1532](https://github.com/uBlockOrigin/uBlock-issues/issues/1532)
- [Cause memory leak on Firefox 107 #2401](https://github.com/uBlockOrigin/uBlock-issues/issues/2401)
- [WebExtension process can take 3GB as per profiling.
1.5GB with default settings. #3198](https://github.com/uBlockOrigin/uBlock-issues/issues/3198)
These are just bogus / [virtual memory](https://en.wikipedia.org/wiki/Virtual_memory) readings, not real RAM usage.
All technical explanations are contained in the linked issues above.