Date: Tue, 13 Mar 2012 12:28:26 +0200 From: Volodymyr Kostyrko <c.kworr@gmail.com> To: Matthew Seaman <matthew@FreeBSD.org> Cc: freebsd-questions@FreeBSD.org Subject: Re: 9.0 spontaneously reboots Message-ID: <4F5F214A.6070509@gmail.com> In-Reply-To: <4F5F2068.8050101@FreeBSD.org> References: <4F5E031D.5060203@gmail.com> <4F5E2ADB.6020104@FreeBSD.org> <4F5F00AA.1060008@gmail.com> <4F5F07A3.2010606@FreeBSD.org> <4F5F0C8A.7090203@gmail.com> <4F5F2068.8050101@FreeBSD.org>
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Matthew Seaman wrote: > On 13/03/2012 08:59, Volodymyr Kostyrko wrote: >> The only other weird thing about this server is: >> >> dev.cpu.0.temperature: 37,0C >> dev.cpu.1.temperature: 37,0C >> dev.cpu.2.temperature: 35,0C >> dev.cpu.3.temperature: 35,0C >> dev.cpu.4.temperature: 43,0C >> dev.cpu.5.temperature: 43,0C >> dev.cpu.6.temperature: 38,0C >> dev.cpu.7.temperature: 38,0C >> dev.cpu.8.temperature: 38,0C >> dev.cpu.9.temperature: 38,0C >> dev.cpu.10.temperature: 37,0C >> dev.cpu.11.temperature: 37,0C >> dev.cpu.12.temperature: 33,0C >> dev.cpu.13.temperature: 33,0C >> dev.cpu.14.temperature: 34,0C >> dev.cpu.15.temperature: 34,0C >> >> And it's consistent - cores 4 and 5 always are hotter then any other. >> This can be something with scheduler, however this started before any >> actual load. Though numbers are normal I had never seen something alike... > > Two cores per socket, and 8 sockets on the board? If so, that looks > absolutely fine to me. The average temperature is 36.8C but 43.0C is > still well within spec. That difference of just over 6 degrees is not > really significant and probably entirely due to different airflow > patterns over the different CPU sockets. If you swap the CPU package in > that socket with one of the other ones, you'll find the hot spot stays > put. You might be able to even things out by rerouteing cables, but > really it's not worth the hassle and won't make any perceptible > difference to performance. Nope: CPU: Intel(R) Xeon(R) CPU E5620 @ 2.40GHz (2394.05-MHz K8-class CPU) FreeBSD/SMP: Multiprocessor System Detected: 16 CPUs FreeBSD/SMP: 2 package(s) x 4 core(s) x 2 SMT threads So the difference is about one physical core with two SMT threads. -- Sphinx of black quartz judge my vow.
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