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Date:      Sun, 28 Mar 2021 22:34:49 +0200
From:      Guido Falsi <mad@madpilot.net>
To:        David G Lawrence <dg@dglawrence.com>, Kevin Oberman <rkoberman@gmail.com>
Cc:        Graham Perrin <grahamperrin@gmail.com>, FreeBSD Current <freebsd-current@freebsd.org>
Subject:   Re: 13.0 RC4 might be delayed
Message-ID:  <5f4c94c2-df08-60ca-4dfc-31364fb444be@madpilot.net>
In-Reply-To: <20210327050411.GS15485@mailx.dglawrence.com>
References:  <2766233C-3CC7-4B02-95AB-7555A60FFD81@samsco.org> <YF1Xt5wbO20GyO8j@doctor.nl2k.ab.ca> <9c49b2b1-6c49-410b-fbb2-a3b73618b01c@gmail.com> <CAN6yY1uh7Lj5%2B7A=zoxDXo4ZyCYCxwc-6eHo6rmQiZpRaAE%2B8w@mail.gmail.com> <20210327050411.GS15485@mailx.dglawrence.com>

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On 27/03/21 06:04, David G Lawrence via freebsd-current wrote:
>> On Fri, Mar 26, 2021 at 1:01 PM Graham Perrin <grahamperrin@gmail.com>
>> wrote:
>>
>>> On 26/03/2021 03:40, The Doctor via freebsd-current wrote:
>>>> ??? if people are having issues with ports like ???
>>>
>>> If I'm not mistaken:
>>>
>>> * 13.0-RC3 seems to be troublesome, as a guest machine, with
>>> emulators/virtualbox-ose 6.1.18 as the host
>>>
>>> * no such trouble with 12.0-RELEASE-p5 as a guest.
>>>
>>> I hope to refine the bug report this weekend.
>>>
>>
>> Had nothing but frequent guest lockups on 6.1.18 with my Win7 system. That
>> was right after 6.1.18 was put into ports. Fell back to legacy (v5) and
>> will try again shortly to see if it's any better.
> 
> Kevin,
> 
>     Make sure you have these options in your /etc/sysctl.conf :
> 
> vfs.aio.max_buf_aio=8192
> vfs.aio.max_aio_queue_per_proc=65536
> vfs.aio.max_aio_per_proc=8192
> vfs.aio.max_aio_queue=65536
> 
>     ...otherwise the guest I/O will random hang in VirtualBox. This issue was
> mitigated in a late 5.x VirtualBox by patching to not use AIO, but the issue
> came back in 6.x when that patch wasn't carried forward.

Sorry I lost that patch. Can you point me to the patch? Maybe it can be 
easily ported.

-- 
Guido Falsi <mad@madpilot.net>



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