Build Arrow with support for mimalloc and jemalloc #540
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adamreeve
commented
Jul 7, 2025
| var pool = MemoryPool.GetDefaultMemoryPool(); | ||
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| Assert.AreEqual(0, pool.BytesAllocated); | ||
| Assert.Greater(pool.MaxMemory, 0); |
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This was incorrect even with the system allocator and only passed when other tests had been run previously and allocated memory.
adamreeve
commented
Jul 7, 2025
| "name": "parquetsharp", | ||
| "version-string": "undefined", | ||
| "builtin-baseline": "d9ccd77bb554e67137f3f754a2e2f11f4188c82c", | ||
| "builtin-baseline": "e08b7bd89ae162f8579df2f8d39a1ae94107c8fd", |
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Needed to bump the baseline to pick up this fix that allows using mimalloc on non-Windows: microsoft/vcpkg#46299
jgiannuzzi
approved these changes
Jul 7, 2025
marcin-krystianc
approved these changes
Jul 7, 2025
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This means the default allocator will now be mimalloc, matching upstream Arrow on platforms where we enable it. Users can switch allocators with the
ARROW_DEFAULT_MEMORY_POOLenvironment variable.Mimalloc and jemalloc should work on arm64, but it appears that these don't build correctly when cross-compiling on an x64 host as part of the Arrow build. Arrow doesn't use mimalloc or jemalloc from vcpkg but always builds its own version, so this probably needs some fixes to the upstream Arrow build scripts.