Re: [suse-amd64] missing memory

I have seen the above 2 lines where for some reason the BIOS could use a DIMM (in my case I reckon it is a faulty DIMM slot). If that CPU has no usuable DIMMs I get the above message. In my case I solved it by moving the 2 DIMMs up from slots 0/1 to slots 2/3 on that CPU.

Also I must add: When you see Node X using interleaving mode 1/0 then NUMA support is turned off in the Kernel. The BIOS enabled cache line interleaving modus then, which makes it impossible for the kernel to know which memory belong to which CPU. This can be usually disabled in the BIOS setup. It depends on the workload what is better, but I would guess in most cases you're better off with turning it off and letting the kernel take care of NUMA. -Andi