The ZFS file system uses a lot more RAM during the course of the day as I read and write data. A LOT MORE.
At start of session RAM use
read/write statistics for my pools composed of ssd and 4 hard drives
I use ZFS as a root filesystem and transferred my data to hard drives managed by ZFS. My data (mostly music and video files) is on a raidz (single parity) pool of 4 hard drives with slightly varying sizes.
RAM usage goes up to 80% after 5 hours with normal activities like browsing and productivity.
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