Who even uses jemalloc in 2026 anyway? (many major projects)
Summary
The article surveys jemalloc usage in 2026, detailing Meta's renewed involvement, a shift in allocator competition (tcmalloc, mimalloc, snmalloc), and a mix of projects that moved off or remained with jemalloc. It provides a methodology for detecting usage and catalogs notable adopters and transitions across databases, runtimes, and cloud/container contexts.