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by viraptor 1499 days ago
What I believe gp was referring to was that zfs uses different caching system that the main system. Specifically arc vs page cache do almost the same job, but are separate and may fight for resources. Discussed in a few places, but here's an example with some behaviour summary https://www.reddit.com/r/zfs/comments/o8xqzb/zfs_on_linux_ca...