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- 3 commits
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Commits on Dec 22, 2024
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CI: use a Dev Drive to improve Windows I/O performance
Dev Drives are a modern Windows feature based on the ReFS file system which offers significantly better performance for developer-focused workloads. This is perfect for pip's Windows CI which is still slower than the Unix jobs. Most of the implementation was borrowed from the uv project which also uses a Dev Drive to improve their Windows CI times. There is a community action (samypr100/setup-dev-drive) that can set up a Dev Drive for us, but the Powershell script needed for our simple needs is really not that bad. The small maintenance burden of doing it ourselves is perferable over the risks of using yet another 3rd party action. NB: We used to use a RAM disk to improve I/O performance, but the creation of the RAM disk started to fail intermittently, annoying everyone and eliminating any speed ups gained by the constant retrying needed. See also: https://learn.microsoft.com/en-us/windows/dev-drive/
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