From owner-freebsd-fs@FreeBSD.ORG  Fri May 28 13:32:30 2010
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From: Carey Jones <mcj@bluetonic.org>
Date: Fri, 28 May 2010 08:06:41 -0500
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Subject: Re: FreeBSD 8.1-Prerelease Panic amd64 w/ZFS..
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On Fri, May 28, 2010 at 4:13 AM, Andriy Gapon <avg@icyb.net.ua> wrote:

> on 28/05/2010 10:30 Howard Leadmon said the following:
> > panic:kmem_malloc(131072):kmem_map to small: 1296826368 total allocated
> >
> > cupid=4
>
> O wow, this is an amd64 system (with 4G RAM) and you've got "kmem_map too
> small".  That's very very strange.
> Are you sure you don't have any backwards-tuning in your configuration or
> environment?
> What value vm.kmem_size_max has?
>

I had a similar issue this morning, while doing a large compile (qt4).  I do
not have a debug kernel going, so I can't get a dump or anything, but I had
exactly the same error as above (a different total allocated, of course, but
in the same neighborhood).  If this happens again, I'll get a debug kernel
compiled, but hopefully it doesn't.  :-)

FreeBSD 8.1-PRERELEASE #0: Wed May 19 00:23:09 CDT 2010
    root@ark.bluetonc.org:/usr/obj/usr/src/sys/ARK amd64

real memory  = 4294967296 (4096 MB)
avail memory = 3852931072 (3674 MB)

mcj@ark ~ % sysctl vm.kmem_size_max
vm.kmem_size_max: 329853485875

Not a lot of info here, I know, but it's just another data point.

Thanks,


 -c