Getting information about motherboard on GNU/Linux

Question

If am using a Linux operating system, how do I find

1. THe number of IOH chips in the system
2. The number of CPU's connected to each IOH chip
3. Whether the CPU's each have their own RAM or whether they all share RAM avaiable on the machine.

If there is any way which gives all information about the motherboard on the system that would also be helpful.

Answer 1

You can use dmidecode, to get information. To get the motherboard name for example dmidecode -s baseboard-product-name The SMBIOS command if available also can be used for some information.

Answer 2

That information is available from the "DMI" subsystem ... but that is part of the BIOS, so quality varies. On high quality machines, like IBM or SuperMicro servers it is usually pretty good. On random desktops, random quality.

The dmidecode tool, usually packaged with the same name, can fish it out, or recent kernels expose it in sysfs directly; see /sys/firmware/dmi for it.