Date: Wed, 10 Jan 2007 16:35:53 -0500 From: Jeff Royle <lists@qwirky.net> To: freebsd-questions@freebsd.org Cc: Juergen Heberling <pjah@hicom.net> Subject: Re: 6.1 Freezes - Suspect SCSI Issue Message-ID: <45A55C39.50405@qwirky.net> In-Reply-To: <45A55858.7000909@netfence.it> References: <45A46DE6.6000806@hicom.net> <45A55858.7000909@netfence.it>
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Andrea Venturoli wrote: > Juergen Heberling wrote: >> Hi all >> >> Please suggest some way of diagnosing this problem: >> >> System freezes after being up in production and apparently stable for >> several weeks, no dump, no error message, nothing on the console - so >> I suspect hardware. > > ... >> Here is my dmesg, long lines were wrapped: >> ... >> FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs >> cpu0 (BSP): APIC ID: 0 >> cpu1 (AP): APIC ID: 1 >> cpu2 (AP): APIC ID: 6 >> cpu3 (AP): APIC ID: 7 >> ... >> ahd0: <Adaptec AIC7902 Ultra320 SCSI adapter> port >> 0x2400-0x24ff,0x2000-0x20ff >> mem 0xdd200000-0xdd201fff irq 32 at device 2.0 on pci3 >> ahd0: [GIANT-LOCKED] >> aic7902: Ultra320 Wide Channel A, SCSI Id=7, PCI-X 67-100Mhz, 512 SCBs >> ahd1: <Adaptec AIC7902 Ultra320 SCSI adapter> port >> 0x2c00-0x2cff,0x2800-0x28ff >> mem 0xdd202000-0xdd203fff irq 33 at device 2.1 on pci3 >> ahd1: [GIANT-LOCKED] >> aic7902: Ultra320 Wide Channel B, SCSI Id=7, PCI-X 67-100Mhz, 512 SCBs > > I've had freezes as you describe on two different servers with ahd and > SMP. The solution was to turn SMP off, unfortunately :( > > bye > av. > _______________________________________________ Are these Xeon's? If so you might want to try disabling Hyper-threading in the bios. I have noticed some strange behavior on 6.2-RC1 with a IBM x336 server here. It never crashed but the throughput "felt" off, so I disabled Hyper-threading and things seemed to perform the way I expected it to should. I would have more details when I actually have time to work on the server itself, however in the meantime give it a shot. If you have 2 CPU's you shouldn't see the CPU2/CPU3 listed just the 2 aftewards. FYI - I have used that particular controller successfully on several servers recently so I don't think that should be a overall issue for you. Cheers, Jeff
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