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Why do we need this change? Do we have some data which demonstrates how this change is improving performances of our apps? |
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Yes, it’s a memory allocator that’s better suited to our use case: long-running processes with frequent allocations, high concurrency, and a need for consistent latency. The default global allocator isn’t ideal here, as it tends to increase fragmentation and introduce global locking during allocations. I will run benchmarks and share the results here. |
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Global Allocator: mimalloc: Mimalloc does make us faster. |
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This PR switches the binaries to use mimalloc instead of the default glibc allocator, which can exhibit higher fragmentation and contention under our workload.