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Date:      Sun, 21 Oct 2012 20:04:36 -0400
From:      "illoai@gmail.com" <illoai@gmail.com>
To:        andrew clarke <mail@ozzmosis.com>
Cc:        Patrick Lamaiziere <patfbsd@davenulle.org>, freebsd-questions@freebsd.org
Subject:   Re: how many memory is needed for FreeBSD 9 ?
Message-ID:  <CAHHBGko8iqkhmB5YDEB1JijTySaWnpgAdxSsueSAsYLdr_=SqA@mail.gmail.com>
In-Reply-To: <20121021164950.GA65075@ozzmosis.com>
References:  <20121021182159.38d1113b@davenulle.org> <20121021164950.GA65075@ozzmosis.com>

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On 21 October 2012 12:49, andrew clarke <mail@ozzmosis.com> wrote:
> On Sun 2012-10-21 18:21:59 UTC+0200, Patrick Lamaiziere (patfbsd@davenulle.org) wrote:
>
>> I'm updating an old laptop running FreeBSD 8.1 with 64 MB ram (44MB
>> available) but now FreeBSD 9.1 panics at boot time:
>>
>> panic: kmem_malloc(4194304): kmem_map too small: 24584192 allocated?
>
> That's one very old laptop. I think you'll need to install more memory
> or downgrade FreeBSD to an earlier version.
>
> 9.1-RELEASE isn't available yet, only 9.1-RC1 & RC2. Given it's
> prerelease code it's plausible the 9.1-RC2 kernel requires more memory
> at boot than 9.1-REL will. Attempting to boot 9.0-REL from CD on your
> laptop should answer that question.
>
> From my limited testing under VirtualBox, 96 MB RAM is about the lower
> limit that will allow FreeBSD 9.1-RC2 to boot before the swap
> partition is enabled. Any less and the kernel will freeze or panic at
> boot. This was with the amd64 version though, not i386.

Keep in mind that the installer will take some memory
on top of what is needed to boot FreeBSD.

-- 
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