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The jemalloc extension replaces the system’s memory allocator with jemalloc.
Unlike other DuckDB extensions, the jemalloc extension is statically linked and cannot be installed or loaded during runtime.
Operating System Support
The availability of the jemalloc extension depends on the operating system.
Linux
The Linux version of DuckDB ships with the jemalloc extension by default.
DuckDB v0.10.1 introduced a change: on ARM64 architecture, DuckDB is shipped without
jemalloc, while on x86_64 (AMD64) architectures, it is shipped withjemalloc.
To disable the jemalloc extension, build DuckDB from source and set the SKIP_EXTENSIONS flag as follows:
GEN=ninja SKIP_EXTENSIONS="jemalloc" make
macOS
The macOS version of DuckDB does not ship with the jemalloc extension but can be built from source to include it:
GEN=ninja BUILD_JEMALLOC=1 make
Windows
On Windows, this extension is not available.
GitHub
The jemalloc extension is part of the main DuckDB repository.
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Last modified: 2024-04-25