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Add jemalloc and jemalloc-auto features

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Introduce the new features jemalloc (set jemalloc global allocator
unconditionally) and jemalloc-auto (set jemalloc global allocator on
musl-based targets to fix multithreaded performance, see [1]).

Because cargo does not support target-specific features or feature
defaults, the default is handled using a helper crate
minedmap-default-alloc.

[1] https://nickb.dev/blog/default-musl-allocator-considered-harmful-to-performance/
This commit is contained in:
Matthias Schiffer 2025-02-12 20:22:26 +01:00
parent a25b3cdbd7
commit 1d9be9a41c
Signed by: neocturne
GPG key ID: 16EF3F64CB201D9C
6 changed files with 77 additions and 1 deletions
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crates/default-alloc/src/lib.rs Normal file
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#[cfg(any(target_env = "musl", feature = "jemalloc"))]
#[global_allocator]
static GLOBAL: tikv_jemallocator::Jemalloc = tikv_jemallocator::Jemalloc;