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rust-memory-alloc's Introduction

Rust Memory Allocator

POC to show that attempting to rapidly allocate over 50% of machine memory causes incremental allocations to slow. I presume this is due to the system allocator requiring time to reorg RAM to provide large contiguous blocks.

Alt text Image shows the tracing-chrome graph for an attempted allocation of 40GB/64GB. Note the final allocation is ~8x slower.

Tested on an M1Pro and M1Max.

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