Date: Tue, 13 Mar 2012 08:38:59 +0000 From: Matthew Seaman <matthew@FreeBSD.org> To: Volodymyr Kostyrko <c.kworr@gmail.com> Cc: freebsd-questions@FreeBSD.org Subject: Re: 9.0 spontaneously reboots Message-ID: <4F5F07A3.2010606@FreeBSD.org> In-Reply-To: <4F5F00AA.1060008@gmail.com> References: <4F5E031D.5060203@gmail.com> <4F5E2ADB.6020104@FreeBSD.org> <4F5F00AA.1060008@gmail.com>
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This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigCB42FF58531CC39D5BC9B643 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On 13/03/2012 08:09, Volodymyr Kostyrko wrote: > The only load I know to cause sure lockup in some hours is memcached. > Right now project is migrated to redis and machines survives for two > weeks. Most common problem for lockup is ECC error. I see. That puts a different complexion on things. Although it is application specific it doesn't rule out hardware problems. In fact, given the nature of the error -- ECC problems -- it pretty much nails it as something wrong with the RAM in that machine. Given that memtest86 doesn't show any problems, and you can run a similar workload with different software it suggests that you have a memory stick (or sticks) that are marginal. Something like extra heat due to higher rates of memory accesses from a particular application could be tipping it over the edge into failure. The 'marginal' behaviour need not be a fault in the memory stick per se. It could simply be the particular characteristics of the memory you have installed not being exactly compatible with your motherboard. In theory the memory conforming to a particular standard should avoid this sort of problem, but this is unfortunately not completely infallible. Swapping out memory sticks for an equivalent specification from a different manufacturer should give good results. Cheers, Matthew --=20 Dr Matthew J Seaman MA, D.Phil. PGP: http://www.infracaninophile.co.uk/pgpkey --------------enigCB42FF58531CC39D5BC9B643 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.16 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk9fB6oACgkQ8Mjk52CukIyZ0wCgg+aci8612DleKHjpy5jX60ww Q40An2hE4bvoOs0gDMQf/e7M2z4f4q1O =wNc4 -----END PGP SIGNATURE----- --------------enigCB42FF58531CC39D5BC9B643--
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