Red Hat

Hello,
sysinfo throws out below 3 CPU counts. Can anyone help me understand what each of these means?

Code:

CPU Count Socketed is           2
CPU Count Physical is           8
CPU Count Virtual is            16

First one seems obvious. However, I wonder how there can be 8 Physical CPUs, if only two were socketed? Does it mean each CPU has 4 cores? No clue about Virtual CPUs though.
I couln't find much info on sysinfo man page nor on the web. If there exist any pages, do point me to such.

Thanks
Harsha Hegde

You can have more than one core in a CPU these days. Quad-core means you'll have four per chip.

I'm guessing these are intel CPU's? Hyperthreading will act like 16 virtual CPU's, but it's still 8 really.

Thanks Corona688. These are indeed Intel CPUs - Xeon E5630. Looking at the manufacturer's product spec, they do have 8 threads:
ARK | Intel® Xeon® Processor E5640 (12M Cache, 2.66 GHz, 5.86 GT/s Intel® QPI)

Regards
Harsha