And some additional context from a few months ago, building off the postmortem.
https://theconsensus.dev/p/2026/04/16/who-even-uses-jemalloc...
https://theconsensus.dev/p/2026/04/16/who-even-uses-jemalloc...
> Development of Jemalloc will transition back to the original open source project: https://github.com/jemalloc/jemalloc. Meta’s fork of the Jemalloc project will be fully archived as part of the transition. We look forward to continuing the collaboration with the community to drive jemalloc.
> See blog post for details: https://engineering.fb.com/2026/03/02/data-infrastructure/in...