Andrea Venturoli wrote:
Juergen Heberling wrote:
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
mem 0xdd200000-0xdd201fff irq 32 at device 2.0 on pci3
aic7902: Ultra320 Wide Channel A, SCSI Id=7, PCI-X 67-100Mhz, 512 SCBs
ahd1: <Adaptec AIC7902 Ultra320 SCSI adapter> port
mem 0xdd202000-0xdd203fff irq 33 at device 2.1 on pci3
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 :(
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.
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