Date: Mon, 30 Apr 2007 19:54:46 +0200 From: Lars Engels <lars.engels@0x20.net> To: John Baldwin <jhb@freebsd.org> Cc: freebsd-current@freebsd.org Subject: Re: cardbus not powered when ACPI is enabled Message-ID: <20070430175445.GB88409@e.0x20.net> In-Reply-To: <200704301336.41897.jhb@freebsd.org> References: <20070423193112.GU46992@e.0x20.net> <200704301208.59312.jhb@freebsd.org> <20070430170204.GA88409@e.0x20.net> <200704301336.41897.jhb@freebsd.org>
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On Mon, Apr 30, 2007 at 01:36:41PM -0400, John Baldwin wrote:
> On Monday 30 April 2007 01:02:04 pm Lars Engels wrote:
> > On Mon, Apr 30, 2007 at 12:08:58PM -0400, John Baldwin wrote:
> > > On Friday 27 April 2007 04:57:52 pm Lars Engels wrote:
> > > > On Thu, Apr 26, 2007 at 05:45:50PM -0400, John Baldwin wrote:
> > > >=20
> > > > I also encountered occasional "Panic: failed to create swap zone" w=
hen
> > > > CPU #1 was launched just before the disks get mounted. Could that be
> > > > related?
> > >=20
> > > Ok, so for the default setup, the only problem is that panic? That s=
ounds=20
> > > like running out of kvm possibly as the swapzone is preallocated from=
=20
> kmem. =20
> > > The system may be allocating too much for the swapzone, in which case=
you=20
> can=20
> > > explicitly set the size via the 'kern.maxswzone' tunable. One possib=
le=20
> > > formula for this is:
> > >=20
> > > maxswzone =3D (swap + 1024) * 1024 * 9 / 2
> > >=20
> > > Where 'swap' is the amount of swap in megabytes.
> >=20
> > I added kern.maxswzone=3D13953024 (2004 MB swap) to loader.conf but aft=
er
> > a reboot the oid is still unknown. Do I need to set it somewhere else?
>=20
> Unfortunately, it's just a tunable, there isn't a sysctl to see the curre=
nt=20
> setting. You can, however, look at the 'vmstat -z' output. You can figu=
re=20
> out the current swap zone size by multiplying the size and limit columns=
=20
> for 'SWAPMETA'. Something like this:
>=20
> vmstat -z | awk '/^SWAPMETA/ { printf "%d\n", $2 * $3 }' | bc
There's a difference of 120 bytes between the vmstat output and
maxswzone. Is that normal?
But I think the panics are gone now. I booted five times with the
cardbus card inserted when cpu #1 was launched and there was no panic.
--=20
Lars Engels
E-Mail: lars.engels@0x20.net =09
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