Date: Tue, 2 Nov 2010 19:50:08 GMT From: Remko Lodder <remko@elvandar.org> To: freebsd-i386@FreeBSD.org Subject: Re: i386/151896: increasing kmem_size in loader.conf panic Message-ID: <201011021950.oA2Jo8Rc086293@freefall.freebsd.org>
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The following reply was made to PR i386/151896; it has been noted by GNATS. From: Remko Lodder <remko@elvandar.org> To: Karl-Heinz Wild <kh.wild@barga.com> Cc: freebsd-gnats-submit@FreeBSD.org Subject: Re: i386/151896: increasing kmem_size in loader.conf panic Date: Tue, 2 Nov 2010 20:43:06 +0100 On Nov 2, 2010, at 8:31 PM, Karl-Heinz Wild wrote: >=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@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 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 /"\ Best regards, | remko@FreeBSD.org \ / Remko Lodder | X http://www.evilcoder.org/ | Quis custodiet ipsos custodes / \ ASCII Ribbon Campaign | Against HTML Mail and News
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