Use MiMalloc as the default global allocator#364
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ewienik merged 1 commit intoscylladb:masterfrom Feb 13, 2026
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Replace the default system allocator with mimalloc for improved allocation performance. Add mimalloc as a dependency to the vector-store crate and set it as the #[global_allocator] in the main binary entry point. Memory usage benchmarks (5M vectors, 1536 dims): * glibc (baseline): 32_601_320 * tikv_jemallocator: 32_193_596 (1.3% improvement) * mimalooc: 32_222_536 (1.2% improvement) The higher the memory usage, the worse the result of glibc is. MiMalloc is a bit worse but it has first tier support for aarch64. Fixes: VECTOR-539.
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Replace the default system allocator with mimalloc for improved allocation performance. Add mimalloc as a dependency to the vector-store crate and set it as the #[global_allocator] in the main binary entry point.
Memory usage benchmarks (5M vectors, 1536 dims):
The higher the memory usage, the worse the result of glibc is.
MiMalloc is a bit worse but it has first tier support for aarch64.
Fixes: VECTOR-539.