Date: Fri, 4 Jan 2002 20:27:32 +0000 From: Ben Smithurst <ben@FreeBSD.org> To: Chris Tracy <freebsd-stable-for-chris@db.lm.com> Cc: stable@freebsd.org Subject: Re: GENERIC kernel configuration file Message-ID: <20020104202732.J67639@strontium.shef.vinosystems.com> In-Reply-To: <20020104151508.B93280-100000@zaxxon.telerama.com> References: <20020104151508.B93280-100000@zaxxon.telerama.com>
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Chris Tracy wrote:
> Today I installed the latest stable snapshot (4.4-20020103-STABLE) and
> when I was configuring my kernel from the GENERIC configuration file,
> I noticed that 'maxusers' was set to '0'.
>=20
> Is this simply a typo, or does it mean something else?
It makes the kernel pick a reasonable default value based on the amount
of main memory. From sys/kern/subr_param.c:
if ((maxusers =3D MAXUSERS) =3D=3D 0) {
maxusers =3D physpages / (1024 * 1024 / PAGE_SIZE);
if (maxusers < 32)
maxusers =3D 32;
if (maxusers > 512)
maxusers =3D 512;
}
This sets maxusers to the number of megabytes of main memory in the
machine, if the kernel config specifies it as zero, but limits it to the
range 32..512.
--=20
Ben Smithurst / ben@FreeBSD.org FreeBSD: The Power To Serve
http://www.FreeBSD.org/
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