Panic with RELENG_6_2 on DELL PE 4600 with PAE

[Ivan Voras]

Stephen Clark wrote:

> looking at kmem_suballoc which calls vm_map_find which returns
> KERN_NO_SPACE
> which is defined as 3.
> 
> Why would there be no space when I have 24GB of memory?

1. Any process, including the kernel can only allocate up to 4 GB of
memory on a 32-bit system (since a 32-bit integer can only hold that
many values)
2. The kernel is further constrained so the user programs can get enough
memory
3. Kernel structures for tracking and using memory are also stored in
kernel memory. 24 GB of memory with PAE probably "eats up" a lot of
those. I think you'll need to increase kmem_size (see
http://wiki.freebsd.org/ZFSTuningGuide for an example - ignore
ZFS-specific things).

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 250 bytes
Desc: OpenPGP digital signature
Url : http://lists.freebsd.org/pipermail/freebsd-stable/attachments/20071003/88433004/signature.pgp