Tag: cpu-architecture

Estimate Core capacity required based on load?

cpu cpu-architecture cpu-usage linux performance

I have quad core ubuntu system. say If I see the load average as 60 in last 15 mins during peak time. Load average goes to 150 as well. This loads happens generally only during peak time. Basically I want to know if there is any standard formula to derive the number of cores ideally required to handle the giv…

How many NUMA nodes on a Power8 processor

cpu-architecture linux numa power-architecture

I am using Ubuntu 15.04 on a two sockets Power8 machine, each socket has 10 cores. “numactl -H” outputs: The problem is, are there two NUMA nodes on each Power8 processor? Any why one has memory but the other one has nothing. I can’t find any document about this. Any information would be app…