Date: Fri, 16 Apr 2004 14:25:06 +0200 From: "Morten A. Middelthon" <morten@freenix.no> To: freebsd-stable@freebsd.org Subject: Re: 4.9 SMP Stability? Message-ID: <20040416122506.GA27206@freenix.no> In-Reply-To: <20040415144458.P51703@duey.wolves.k12.mo.us> References: <A6646004-8A4D-11D8-B7CB-000A95B32650@comfrey.net> <40770C0A.3000000@updegrove.net> <407979F3.20501@freebsd.org> <407C5AED.9040709@updegrove.net> <407C76A6.5080502@users.sourceforge.net> <407CA3D6.2090803@updegrove.net> <20040415144458.P51703@duey.wolves.k12.mo.us>
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--VS++wcV0S1rZb1Fb Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi, I have been following this thread since I've been experiencing similar problems with my dual P4 2.8GHz Xeon Dell PowerEdge 1750 server. Hopefully my experiences will be useful to some of you. I started with installing FreeBSD 4.9-RELEASE, then cvsup'ing and upgrading= to -p4 without problems. When I upgraded I also compiled in SMP-support into t= he kernel. Then my problems started. The machine would panic and then reboot at seemingly random intervals. After reading what some of the others on this l= ist did I first tried upgrading to 4.10-BETA, but that didn't help. I then downgraded to 4.8-RELEASE-pXX (iirc), but no help there either (fortunately= a buildworld only takes about 20 minutes on this box ;)). The next thing was to check BIOS and firmware versions, but they were all up to date.=20 Then I got a tip from a friend on IRC who told me to check my KVM settings = in my kernel. Out of old habit I have always defined NMBCLUSTERS, NSFBUFS and similar options to specific values, overriding FreeBSD's own dynamic settin= gs, which are based on the amount of RAM. The machine in question has 2GB of RA= M, which is the highest amount of RAM in any FreeBSD server I've ever set up, = so the values for NMBCLUSTERS and so on I've used for servers with lower amoun= ts of RAM obviously didn't work for this setup.=20 Now I let FreeBSD do this for me, that is setting maxusers to 0 and then _not_ defining NMBCLUSTERS, NSFBUFS etc. So far the machine has been completely stable. I've done one 'make -j4 buildworld', built several ports and moved a large filesystem to it over NFS, and no problems.=20 with regards, --=20 Morten A. Middelthon Quidquid latine dictum sit, altum viditur. (Whatever is said in Latin sounds profound.) --VS++wcV0S1rZb1Fb Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (FreeBSD) iD8DBQFAf9Civsz2LoKf32oRAv07AJ9LYUX0HApAfbuRlVYlS/iwf5U8tQCdGbAx 8ogP0sFki/onxNMtT9KYAis= =NykU -----END PGP SIGNATURE----- --VS++wcV0S1rZb1Fb--
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