Date: Thu, 24 Jul 2008 22:09:16 +0200 From: "Michael Grant" <mgrant@grant.org> To: "FreeBSD Stable List" <freebsd-stable@freebsd.org> Cc: John Sullivan <john@basicnets.co.uk> Subject: Re: Fresh 7.0 Install: Fatal Trap 12 panic when put under load Message-ID: <62b856460807241309k3cea60dbh24eea677cd6751f7@mail.gmail.com> In-Reply-To: <B4E29257-B805-4597-9024-E042F34243D1@mac.com> References: <854CADB9D95147CAB10BC35887A8E5DC@emea.hubersuhner.net> <20080716031640.7DC744500E@ptavv.es.net> <A6F1ACCEE35A4BC49FC9DFA561ED1131@emea.hubersuhner.net> <62b856460807160743v3fce951eg1b2bd9e50a35ba1d@mail.gmail.com> <BF6724CD748744908D602889CCF119F1@emea.hubersuhner.net> <487E0D1B.2060902@FreeBSD.org> <20080716203900.5jt4qce17gg0og0o@mail.basicnets.co.uk> <A403B8D27BE048E79A94B09C0C520854@emea.hubersuhner.net> <B4E29257-B805-4597-9024-E042F34243D1@mac.com>
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I have been having what seems like similar panics. I too cannot manage to get a crash dump, neither classic style nor minidump. Nor can I get it to work with DDB, there seems to be a problem with DDB and my Geom mirror. Kris recommended I up kmem_size which I have done (twice now) and since the last time I upped it, the machine has not crashed again (yet?). For the moment, I'm hoping things are stable. In /boot/loader.conf, I currently have the following: vm.kmem_size=1G vm.kmem_size_max=1G vm.kmem_size_scale=2 and in my kernel conf file I have: options KVA_PAGES=512 Here's what top says currently: last pid: 57367; load averages: 0.56, 0.54, 0.61 up 2+10:16:57 15:50:55 407 processes: 6 running, 378 sleeping, 2 zombie, 21 waiting CPU states: 0.1% user, 0.0% nice, 2.3% system, 0.7% interrupt, 97.0% idle Mem: 1309M Active, 1291M Inact, 497M Wired, 155M Cache, 199M Buf, 7408K Free Swap: 9541M Total, 1628K Used, 9540M Free Is this a heavily loaded machine? It's using a lot of memory, but it's mostly idle. I have 2 sticks of double-sided memory (4gig total) in the box. The SuperMicro documentation recommends using single sided sticks for 6 or more sticks. I feel for you John, I've lost many nights sleep in the last couple weeks trying to understand why this production box was crashing. I was really surprised to see this start happening, normally my freebsd boxes have uptimes in terms of years, not hours. Michael Granthome | help
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