Performance of hashing on different file systems

I also asked about this here: https://github.com/vercel/turborepo/discussions/10014

How much faster is turborepo on ext4 filesystems than APFS? · vercel/turborepo · Discussion #10014

I also asked this here: https://vercel.community/t/performance-of-hashing-on-different-file-systems/6101 Summary I'm been noticing some very shocking things with APFS, that are honestly quite conce...

I'm been noticing some very shocking things with APFS, that are honestly quite concerning.

Here is the test I setup: https://github.com/NullVoxPopuli/disk-perf-git-and-pnpm/blob/main/README.md along with a number of datapoints from various machines and operating systems. Interactive table here

This doesn't test turbo specifically, but more file creation and deletion.

turborepo has to read all files in a package (governed by inputs), to use as part of what creates the hash for a task.

Now, I know read is different from create and delete, but still... I wonder.

Is there a test we can do with turbo in a sufficiently sized repo on both linux/ext4 and macOS/APFS to see how long it takes just to compute hashes for tasks?

As an aside, if anyone is curious about disk perf on APFS, I could really use your help if you have an M2, M3, or M4,

Instructions here: https://github.com/NullVoxPopuli/disk-perf-git-and-pnpm/blob/main/README.md

tl;dr: time ( a git clean ) and time ( dep install )

thank you!!