ZFS committed to the FreeBSD base.

Kris Kennaway kris at obsecurity.org
Tue Apr 10 01:11:26 UTC 2007

On Mon, Apr 09, 2007 at 07:38:37PM -0500, Craig Boston wrote:
> On Mon, Apr 09, 2007 at 07:35:05PM -0500, Craig Boston wrote:
> > 512MB RAM.  So I've been testing in a VMware instance with 512MB.  My
> > vm.kmem_size is defaulting to 169758720.
> Meh, wrong stat, I probably should have said that
> vm.kmem_size_max: 335544320

Nah, you were right the first time :) Your system is defaulting to
160MB for the kmem_map, of which zfs will (by default) try to use up
to 3/4.  Naturally this doesn't leave much for the rest of the kernel
(40MB), so you'll easily run the kernel out of memory.

For now, you probably want to increase vm.kmem_size a bit to allow
some more room for zfs, and set vfs.zfs.arc_max and arc_min to
something more reasonable like 64*1024*1024+1 (the +1 is needed
because zfs currently requires "greater than 64MB" for the arc).

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