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contributing: suggest setting up a RAM disk on Mac to speed up tests by ilyagr · Pull Request #7493 · jj-vcs/jj
Thanks to @yuja for suggesting the RAM disk solution.
Update: Related reading, thanks to @davidbarsky: https://gregoryszorc.com/blog/2018/10/29/global-kernel-locks-in-apfs/
Might add it to the comm...