cardbus not powered when ACPI is enabled

Mon Apr 30 17:38:07 UTC 2007

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

-- 
John Baldwin