Date: Sat, 19 Aug 2006 20:20:22 GMT From: Kris Kennaway <kris@obsecurity.org> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/101689: [panic] kmem_malloc in UMA Message-ID: <200608192020.k7JKKMRe047630@freefall.freebsd.org>
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The following reply was made to PR kern/101689; it has been noted by GNATS.
From: Kris Kennaway <kris@obsecurity.org>
To: Andrej Zverev <az@FreeBSD.org>
Cc: FreeBSD-gnats-submit@FreeBSD.org
Subject: Re: kern/101689: [panic] kmem_malloc in UMA
Date: Sat, 19 Aug 2006 16:17:54 -0400
On Wed, Aug 09, 2006 at 12:39:44PM +0400, Andrej Zverev wrote:
>
> >Number: 101689
> >Category: kern
> >Synopsis: [panic] kmem_malloc in UMA
> >Confidential: no
> >Severity: serious
> >Priority: low
> >Responsible: freebsd-bugs
> >State: open
> >Quarter:
> >Keywords:
> >Date-Required:
> >Class: sw-bug
> >Submitter-Id: current-users
> >Arrival-Date: Wed Aug 09 08:40:13 GMT 2006
> >Closed-Date:
> >Last-Modified:
> >Originator: Andrej Zverev
> >Release:
> >Organization:
> >Environment:
>
>
>
> >Description:
> I'm trying to create > 20000 vlan interfaces.
> #!/usr/bin/perl
>
> for ($i=0; $i<20000; $i++)
> {
> system ("ifconfig vlan$i create");
> system ("ifconfig vlan$i vlan 10 vlandev rl0 10.10.10.10/24");
> }
>
> and then system out of memory, panic happens, but it's not right.
> Trace of panic attached, if i can provide extra detail, just ask
Your ran your kernel out of memory. Try to tune VM_KMEM_SIZE_MAX in
your kernel, e.g. on my heavily loaded servers I use:
options VM_KMEM_SIZE_MAX=419430400 #400MB
Kris
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