kmem_map too small under ZFS

Michael Haro mharo at
Mon Jan 7 04:34:34 PST 2008

I have the following in /boot/loader.conf and it seems to be doing
well for me on FreeBSD-i386 with 1G RAM.


Most of these settings came from various mailing list postings.  It's
possible that some don't do anything useful, but I haven't had a zfs
related panic since.

On Jan 7, 2008 4:00 AM, Pete French <petefrench at> wrote:
> I have been experimenting with ZFS recently, and have been seeing the
> occasional reboot with the above error. A quick google shows that this is
> a known problem, but that it should go away if you increase kernel
> memory. I have done this, but I am still seeing the problem - and not
> uunder high load either. Is there anything else I can try to mitigate this ?
> I am running 7.0-RC1 from Jan 3rd at the moment..
> cheers,
> -pcf.
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