ZFS committed to the FreeBSD base.

Vince jhary at unsane.co.uk
Tue May 22 09:01:24 UTC 2007

Darren Reed wrote:
> On Mon, May 21, 2007 at 04:40:31PM +0100, Vince wrote:
> ...
>> I dont suppose that there are any other tunables people could suggest? I
>> got a shiny new(well old but new to me) dual opteron board and dual 250
>> sata drives and though i'd try putting it in as my home server with
>> everything but / on zfs since i've had my /usr/ports on my laptop as
>> compressed zfs since very shortly after it was commited.
>> 	After a few kmem_map: too small" panics I re-read this thread and put
>> vm.kmem_size_max and vm.kmem_size up to 512M and vfs.zfs.arc_min
>> vfs.zfs.arc_max down to 65 megs. This did get me past "portsnap extract"
>> but a make buildworld still got me the same panic.  vmstat -z showed a
>> steady growth. This is with a generic -CURRENT from friday. I'm happy to
>> provide any useful information once I get home and reboot it.
> Are you running the opterons with a 32 or 64 bit kernel?
> I set vfs.zfs.arc_max to somewhere between 75% and 80% of vm.kmem_size_max.
I'm running i386 more because I had a i386 CD lying around to install
from and wont be using more than 3Gigs of RAM, than through informed
choice. It looks like  setting  kern.maxvnodes=50000 has solved it for now.

(after almost a day of uptime including building world and adding the
2nd disk to the zfs mirror)
[root at crab ~]# vmstat -m | grep sol
solaris 188066 139903K       - 164899933

I may reinstall at a later date as this is still very much a box to play
with, but I gather there is no great gain from going 64 bit other than
not having to play with PAE if you've got lots or RAM.

Thanks to everyone who made suggestions,


> Darren
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