> My question now: why does the machine swap, is this normal=20
> behaviour?
> Why is wired at about 30 GB if ARC=3D23 GB and L2ARC-header=3D259 MB?
If I've understood it right from the mailing lists, ZFS returns memory=20
back to the OS from caches somewhat lazily, so in times of high memory=20
load ZFS system can cause some swapping.
Of course, once the situation with memory load is over, swap will=20
still continue to show the max amount swapped ever, even if everything=20
is again back in real memory.
So nothing to worry about I'd say.
-Reko=20
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