On 2012-Jul-16 19:45:18 -0400, Andy Young <[email protected]> wrote: >I am having trouble with one of our servers and I'm not sure what to try >next. It has a Supermicro H8DGi-F motherboard with two 16-core AMD >processors and two memory banks, one for each processor. When I originally >built it, I only had one processor and 40 GB of ram. Everything worked >awesome. I recently upgraded it, adding another processor and another 40 GB >of ram. It was incredibly unstable and constantly rebooted within minute or >two of uptime, sometimes it wouldn't even boot all the way before crashing >and rebooting again. ... >other ideas? Again, its perfectly stable with two processors and 64 GB of >memory but goes nuts when I more.
Have you checked the motherboard notes to ensure that your configuration is supported? Is the BIOS up to date? What version of FreeBSD is this? And I presume it's amd64 rather than i386+PAE. Have you tried running memtest86 or memtest86+? (You might like to run both because ISTR only the former handles SMP). Can you capture the output from a verbose boot with all the memory installed? The SMAP and/or physical memory layout might offer a clue as to what is going wrong. -- Peter Jeremy
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