Re: cardbus not powered when ACPI is enabled

On Monday 30 April 2007 01:54:46 pm Lars Engels wrote:
> 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:
> > > > > 
> > > > > I also encountered occasional "Panic: failed to create swap zone" 
when
> > > > > CPU #1 was launched just before the disks get mounted. Could that be
> > > > > related?
> > > > 
> > > > Ok, so for the default setup, the only problem is that panic?  That 
sounds 
> > > > like running out of kvm possibly as the swapzone is preallocated from 
> > kmem.  
> > > > The system may be allocating too much for the swapzone, in which case 
you 
> > can 
> > > > explicitly set the size via the 'kern.maxswzone' tunable.  One 
possible 
> > > > formula for this is:
> > > > 
> > > >     maxswzone = (swap + 1024) * 1024 * 9 / 2
> > > > 
> > > > Where 'swap' is the amount of swap in megabytes.
> > > 
> > > I added kern.maxswzone=13953024 (2004 MB swap) to loader.conf but after
> > > a reboot the oid is still unknown. Do I need to set it somewhere else?
> > 
> > Unfortunately, it's just a tunable, there isn't a sysctl to see the 
current 
> > setting.  You can, however, look at the 'vmstat -z' output.  You can 
figure 
> > out the current swap zone size by multiplying the size and limit columns 
> > for 'SWAPMETA'.  Something like this:
> > 
> >     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?

Yes.  The swapzone objects are about ~280 bytes or so.

> 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.

Ok.

-- 
John Baldwin