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Date:      Fri, 12 Feb 2021 21:32:46 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 227609] Compiling world from sources fails: out of swap space
Message-ID:  <bug-227609-227-HHEYPYhT1V@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-227609-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-227609-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D227609

--- Comment #15 from Mark Millard <marklmi26-fbsd@yahoo.com> ---
(In reply to Vladislav V. Prodan from comment #14)

I did not think to ask about ZFS use or its ARC
memory use.

My figures and experience are for UFS contexts that use
less memory.

So, under default tuning of ZFS, my judgments are probably
significant underestimates of the memory use.

I'm afraid I've no clue how to tune with ZFS involved. I
can only suggest trying to use less memory and/or having
even more swap.

The combination:

Mem: 145M Active, 51M Inact, 12M Laundry, 1395M Wired, 352M Free
ARC: 1013M Total
100537 root         78    0   200M   148M RUN      0:03  23.00% c++
(so 148M resident of 200M size)

Looks messy for the activity. Just the 1395M Wired leaves you only
something like (based on RAM+SWAP) 2560M - 1395M =3D=3D 1165M space
for more and there can be compiles or link sa hake more space than
that.

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