ZFS kmem_map too small.

Pawel Jakub Dawidek pjd at FreeBSD.org
Tue Nov 6 02:00:35 PST 2007

On Tue, Nov 06, 2007 at 10:04:43AM +0100, Borja Marcos wrote:
> On Nov 6, 2007, at 12:31 AM, Niki Denev wrote:
> >I have fairly easy reproductable (bonnie++) kmem_map too small panics
> >on AMD64 even with kmem_size and kmem_size_max to 1G on 8Gig machine.
> >I've tried setting them to 2G but the kernel panics on boot.
> >I have compiled in debugger support and can provide backtraces and
> >testing if needed (the machine is still not in production).
> Same here. I can provoke an instant panic running (for example) a make  
> buildworld and
> bonnie++. I have all the filesystems on ZFS, booting from a USB  
> pendrive. I tried to set
> the kernel memory limits to 1.5 GB but it still crashes with the  
> kmem_too_small panic. I also
> tried the patch supplied by Pawel.
> The machine has 6 hard disks configured as a raidz2 pool.
> Please let me know of any test anyone might need.

If you use vm_kern.c.2.patch, can you show loader.conf and exact command
that can provke the panic?

Pawel Jakub Dawidek                       http://www.wheel.pl
pjd at FreeBSD.org                           http://www.FreeBSD.org
FreeBSD committer                         Am I Evil? Yes, I Am!
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