Memory usage appears a bit high

James B. Byrne byrnejb at
Wed Jan 16 17:46:43 UTC 2019

On Wed, January 16, 2019 12:36, Steve O'Hara-Smith wrote:
> On Wed, 16 Jan 2019 12:31:14 -0500
> "James B. Byrne via freebsd-questions" <freebsd-questions at>
> wrote:
>> We have an Cyrus IMAP service running on a BHyve FreeBSD-11.2p7 vm.
>> It has 4 Gb allocated.  I have noticed that top reports this:
>> Mem: 164M Active, 204M Inact, 22M Laundry, 3426M Wired, 111M Free
> 	Are you running ZFS ? If so then most of the wired memory is
> probably ARC.

Yes, we are running the vm using zfs.

ARC: 2432M Total, 451M MFU, 1683M MRU, 8480K Anon, 38M Header,
     252M Other
     1828M Compressed, 3768M Uncompressed, 2.06:1 Ratio

Could someone explain to me what I am seeing and why it is so?

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