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Date:      Mon, 26 Sep 2016 19:10:41 +0000
From:      bugzilla-noreply@freebsd.org
To:        vbox@FreeBSD.org
Subject:   [Bug 212128] emulators/virtualbox-ose: Default AIO settings break VirtualBox
Message-ID:  <bug-212128-26505-HSdZpBxGAg@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-212128-26505@https.bugs.freebsd.org/bugzilla/>
References:  <bug-212128-26505@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D212128

--- Comment #3 from rkoberman@gmail.com ---
I am now running with a more conservative set of AIO parameters and have ha=
d no
problems. N.B. I only run a single instance of Windows 7 or, on rare occasi=
on,
Linux Mint, so this might not be appropriate for servers running multiple V=
Ms
at the same time.

# From my sysctl.conf                    Default
vfs.aio.max_aio_procs=3D4                 # (32)
vfs.aio.aiod_lifetime=3D30000             # (3000)
vfs.aio.max_aio_queue=3D8192              # (1024)
vfs.aio.max_aio_queue_per_proc=3D1024     # (256)
vfs.aio.max_aio_per_proc=3D128            # (32)
vfs.aio.max_buf_aio=3D64                  # (16)=20

I will shortly reduce these further and see how it goes.

This does not preclude the possibility that the modifications to the port c=
ould
fix this far batter, but I have not had an issue with either kernel memory =
or
error in the VMs with these adjustments.

--=20
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