i386/151896: increasing kmem_size in loader.conf panic

[Karl-Heinz Wild]

The following reply was made to PR i386/151896; it has been noted by GNATS.

From: Karl-Heinz Wild <kh.wild at barga.com>
To: Remko Lodder <remko at elvandar.org>
Cc: freebsd-gnats-submit at FreeBSD.org
Subject: Re: i386/151896: increasing kmem_size in loader.conf panic
Date: Wed, 3 Nov 2010 08:51:05 +0100

 Hi Remko
 
 I thought I've done that before.
 But I ran into problems when installing ports.
 Do I have add some setting before compiling into make.conf
 to prevent the architecture or the cpu?
 
 Thank you
 
 Karl-Heinz
 
 On 02.11.2010, at 21:11, Remko Lodder wrote:
 
 >=20
 > Hello,
 >=20
 > Yes.. I cannot make it better :-), if you have access to the machine =
 and it isn't production or can have some downtime, you should backup the
 > data on it, and reinstall the system or to be quicker overwrite the =
 base system with amd64 binaries, you should however rebuild your ports
 > and re-import the data you backupped (exported). Especially with =
 databases and stuff, because 'replacing' that wont work.
 >=20
 > Cheerio
 > remko
 >=20
 > On Nov 2, 2010, at 8:51 PM, Karl-Heinz Wild wrote:
 >=20
 >> Hi Remko
 >>=20
 >> Thank you for answering.
 >> Good and worse as well :)
 >>=20
 >> Best regards
 >>=20
 >> On 02.11.2010, at 20:43, Remko Lodder wrote:
 >>=20
 >>>=20
 >>> On Nov 2, 2010, at 8:31 PM, Karl-Heinz Wild wrote:
 >>>=20
 >>>>=20
 >>>>> Number:         151896
 >>>>> Category:       i386
 >>>>> Synopsis:       increasing kmem_size in loader.conf panic
 >>>>> Confidential:   no
 >>>>> Severity:       serious
 >>>>> Priority:       high
 >>>>> Responsible:    freebsd-i386
 >>>>> State:          open
 >>>>> Quarter:       =20
 >>>>> Keywords:      =20
 >>>>> Date-Required:
 >>>>> Class:          sw-bug
 >>>>> Submitter-Id:   current-users
 >>>>> Arrival-Date:   Tue Nov 02 19:40:11 UTC 2010
 >>>>> Closed-Date:
 >>>>> Last-Modified:
 >>>>> Originator:     Karl-Heinz Wild
 >>>>> Release:        8.1, -current
 >>>>> Organization:
 >>>> barga.com
 >>>>> Environment:
 >>>> FreeBSD pool.barga.com 9.0-CURRENT FreeBSD 9.0-CURRENT #2: Sun Oct =
 31 16:21:25 CET 2010     root at pool.barga.com:/usr/obj/usr/src/sys/PAE  =
 i386
 >>>>> Description:
 >>>> We are running a Intel Xeon E5520 @ 2.27 machine with an 3ware =
 controller do serve 5.7 TG storage ofer zfs.
 >>>>=20
 >>>> When running the server with the given 16 GB Ram we are unable do =
 increase inside the loader.conf the settings vm.kmem_size and =
 vm.kmem_size_max over 320MB.
 >>>>=20
 >>>> After trying lots of values change the memory banks because of a =
 possible ram error without success.
 >>>> Then we removed 8GB and afterwards it was possible to extend the =
 kmem_size to 512MB.
 >>>>=20
 >>>>=20
 >>>>> How-To-Repeat:
 >>>> Running -Current from 29.Oct 2010 with PAE on a system with 16GB =
 Memory, an 3ware Raid controller and PAE config: KVM_PAGES 512
 >>>>=20
 >>>> loader.conf:
 >>>> vm.kmem_size=3D"512M"
 >>>>=20
 >>>=20
 >>>=20
 >>>=20
 >>> Yes well, i386 is not designed to handle more then 4gb of memory, =
 while the PAE set does allow for some more memory you _need_ amd64 to =
 get 16gb available and addressable.
 >>> I honestly do not think you can ever get that far with i386 (not =
 even with PAE).
 >>>=20
 >>> --=20
 >>> /"\   Best regards,                        | remko at FreeBSD.org
 >>> \ /   Remko Lodder                      |
 >>> X    http://www.evilcoder.org/    | Quis custodiet ipsos custodes
 >>> / \   ASCII Ribbon Campaign    | Against HTML Mail and News
 >>>=20
 >>>=20
 >>>=20
 >>>=20
 >>=20
 >>=20
 >> Mit freundlichen Gr=FCssen
 >>=20
 >> ---
 >> Karl-Heinz Wild
 >> kh.wild at barga.com
 >>=20
 >> barga.com - technische Dienstleistungen GmbH
 >> A-6805 Feldkirch
 >> Leusbuendtweg 49a
 >>=20
 >>=20
 >>=20
 >>=20
 >=20
 > --=20
 > /"\   Best regards,                        | remko at FreeBSD.org
 > \ /   Remko Lodder                      |
 > X    http://www.evilcoder.org/    | Quis custodiet ipsos custodes
 > / \   ASCII Ribbon Campaign    | Against HTML Mail and News
 >=20
 >=20
 >=20
 >=20
 
 
 Mit freundlichen Gr=FCssen
 
 ---
 Karl-Heinz Wild
 kh.wild at barga.com
 
 barga.com - technische Dienstleistungen GmbH
 A-6805 Feldkirch
 Leusbuendtweg 49a
 
 tel: +43 676 4355 136