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Date:      Fri, 1 Apr 2022 14:46:14 -0700
From:      Doug Hardie <bc979@lafn.org>
To:        Michael Schuster <michaelsprivate@gmail.com>
Cc:        FreeBSD Questions Mailing List <freebsd-questions@freebsd.org>
Subject:   Re: Used Disk Space
Message-ID:  <1B270CB3-9E95-460D-97BC-94E21E50F7D8@sermon-archive.info>
In-Reply-To: <CADqw_gL=DZ5pmuRMqyBxHqXpvkp7OAKSaS7AJW6PCKsEgtgTFg@mail.gmail.com>
References:  <9D4BE892-FA1A-4B5D-B144-2D51F7D822B7@sermon-archive.info> <CADqw_gL=DZ5pmuRMqyBxHqXpvkp7OAKSaS7AJW6PCKsEgtgTFg@mail.gmail.com>

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> On 1 April 2022, at 05:01, Michael Schuster =
<michaelsprivate@gmail.com> wrote:
>=20
> On Fri, Apr 1, 2022 at 12:09 PM Doug Hardie <bc979@lafn.org> wrote:
>>=20
>> I have two systems: one is amd64 and the other arm64.  The amd64 is =
13.0, the arm64 is 13.1 RC1.  The disk utilization between the machines =
is quite different.  For example, /usr/lib only has 2 extra files in the =
arm64.  They add up to less than 100 M.  du -sh on amd64 shows 502M for =
/usr/lib, and du -sh on arm64 shows 2.1G.  Walking through the entries =
on both systems, most are identical.  When there are differences, they =
are around 2M at most.  Often they are around 10K.  The arm64 is using =
almost twice the space of the amd64 if you believe du.  However, the sum =
of the individual allocations on each system are less than 100M =
different.  What is going on?
>=20
> I haven't done much active FS work for a while, so I'll just hazard a
> guess: ZFS vs UFS?
> perhaps FS allocation units are different between the two systems?
>=20
> HTH
> Michael

Both systems are UFS.  I had considered the allocation units but haven't =
figured out where to check that.

-- Doug=



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