WSL 2 is getting faster Windows file system access

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Summary

A change in WSL 2 removes a bottleneck on the virtiofs path, improving file I/O performance for workflows crossing the Windows/Linux boundary. This change landed in May 2026, building on WSL 2's existing use of a full Linux kernel in a Hyper-V VM.

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Related coverage

Hacker News Front PageWSL 2 is getting faster Windows file system access6/5/2026, 9:43:43 AM

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