-CURRENT kernel panic
Vincent Poy
vince at oahu.WURLDLINK.NET
Thu Mar 4 14:14:24 PST 2004
On Thu, 4 Mar 2004, Andrew Gallatin wrote:
>
> Vincent Poy writes:
> > On Thu, 4 Mar 2004, Andrew Gallatin wrote:
> >
> > Interesting. I'm still wondering what the VM_KMEM_SIZE_SCALE
> > number represents.
>
> It tries to autoscale the kmem size, so that you don't need to hard
> code it. Hardcoding it could be bad if you change the amount of ram
> in the box.
That part I understand but what exactly does the number 2 and 3
mean?
> > > > > Even after bumping the limits, I'm seeing a repeatable panic when
> > > > > allocating a large amount of kernel memory ("panic: pmap_enter:
> > > > > attempted pmap_enter on 4MB page"). See yesterday's message
> > > > > with that subject for details..
> > > >
> > > > Just checked the archives and yours seems to jhave more variables
> > > > than mines from the panic message.
> > >
> > > Can you describe the panic you see?
> >
> > Everything including buildworld doesn't cause the panic except at
> > 4AM at night when I do a dump | restore of the /usr partition which shows
> > just this:
> >
> > panic: kmem_malloc (4096): kmem_map too small: 377487360 total allocated
> > at line 341 in file /usr/src/sys/vm/vm_kern.c
>
> According to this, your kmem map size is too small. (360MB).
> What does sysctl vm.kmem_size show? 377487360?
vince at bigbang [2:07pm][~] >> sysctl vm.kmem_size
vm.kmem_size: 209715200
> Try bumping it up via vm.kmem_size=805306368 /boot/loader.conf
Just tried that but for some reason, the number doesn't set.
vince at bigbang [2:12pm][~] >> sysctl vm.kmem_size
vm.kmem_size: 209715200
vince at bigbang [2:12pm][~] >> cat /boot/loader.conf
hw.ata.wc="1"
snd_ich_load="YES"
acpi_dsdt_load="YES"
acpi_dsdt_name="/boot/acpi_dsdt.aml
agp_load="YES"
nvidia_load="YES"
vm.kmem_size="805306368"
Does it have to be in a certain order? Since I had the same
problem when setting kern.ipc.nmbclusters where it didn't work either.
Cheers,
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