Re: Freebsd 8.0 kmem map too small

On Tue, Jun 08, 2010 at 07:26:45PM +0900, Yoshiaki Kasahara wrote:
> On Tue, 8 Jun 2010 02:54:44 -0700,
> 	Jeremy Chadwick <[e-mail]> said:
> 
> > I realise you're talking about amd64, but I'm not sure how UMA is
> > getting enabled on i386 to begin with.  It does look like it's enabled
> > on amd64 by default.
> 
> I believe that this thread had been started before this tunable was
> introduced on May 24th.  Before that, ZIO_USE_UMA was used to control
> the use of UMA, and it was enabled unconditionally in
> /usr/src/sys/modules/zfs.

Yoshiaki, thanks for the tip.  I didn't check CVS commit logs to see
when this tunable was introduced.  It appears that the systems I'm
looking at don't have the use_uma tunable because the kernel was built
from RELENG_8 code dated May 23rd.  This would also explain why Pete
sees the tunable and I don't.

Wish this stuff was documented somewhere.  :-)

-- 
| Jeremy Chadwick                                   [e-mail] |
| Parodius Networking                       http://www.parodius.com/ |
| UNIX Systems Administrator                  Mountain View, CA, USA |
| Making life hard for others since 1977.              PGP: 4BD6C0CB |

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