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Comment by benlivengood | Hacker News Reader

Have you noticed a big problem with ZFS on 8GB of RAM? I've successfully ran fairly large (2TB, thousands of snapshots) zpools out of 4GB of RAM, with dedup off of course.

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Since ZFS is the greatest filesystem in the world, I use ZFS -everywhere-. Including, on my very old Lenovo Yoga 2 Pro (2013) with a slow dual core, and only 8GB of ram. ZFS works great, on that device I need to manually limit the ARC size so that it doesn't eat all my ram:

  # cat /etc/modprobe.d/tiny-modprobe.d-zfs.conf
  options zfs zfs_arc_max=2147483648

I don't use ZFS, so I can’t comment. Maybe the blogs author just wants to use that RAM for the web browser :-)

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