Tech article
WSL3 Performance is about 5-60% faster than WSL2 depending on the workload
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Hacker News | Oct 7, 2026 | tonymet
Automated excerpt
To see what actually changed under the hood, I ran side-by-side benchmark suites comparing WSL 2. 6. 3. 0 (Linux kernel 6. 6. 87. 2) against WSL 3. 0. 2. 0 (Linux kernel 6. 18. 40. 1). Here is what the empirical numbers look like across kernel primitives, memory bandwidth, and an end-to-end Go compiler workload. The lower kernel trap overhead and improved slab caching in 6. 18 directly shaved over 9 seconds off time spent inside the kernel.
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