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Date:      Tue, 23 Apr 2019 00:58:39 +0000
From:      bugzilla-noreply@freebsd.org
To:        virtualization@FreeBSD.org
Subject:   [Bug 237429] bhyve: Performance regression after 12 upgrade
Message-ID:  <bug-237429-27103-JDKMO6F9gT@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-237429-27103@https.bugs.freebsd.org/bugzilla/>
References:  <bug-237429-27103@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D237429

--- Comment #13 from Rodney W. Grimes <rgrimes@FreeBSD.org> ---
(In reply to doctor from comment #11)
I am concerned that you have loaded zfs, you have no pool what so ever pres=
ent
on this machine?  So my assumption is neither did 11.2, so please can you
remove zfs, just so we know in no possible way is that having an effect.  I=
 am
pretty sure that zfs grabs a chunk of memory at boot time even if you just =
load
it and never do a zpool import, but it should not be a very big chunk.

If in fact you do have a pool, even if your not using it, zfs is going to
import it and suck up a bunch of your memory.

I am not so interested in a large chunk of top data,
however a single shot of "ps alwwx" would be of interest if you could get
one during the slow down phase.

At this stage I am pretty convinced this is additional memory pressure and =
or
system tuning changes that came with 12.0.  It does have a slightly larger
memory foot print, and there are a fairly extensive amount of vm system cha=
nges
between 11.2 and 12.0.

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