This question already has an answer here:. 1 answer I am trying to understand what does%CPU means when I run top. I am seeing%CPU for my application as 400 or 500 most of the times. Does anyone knows what does this mean? What number is a high number? Powertracks pro audio download. 19080 david 20 0 27.9g 24g 12m S 400 19.7 382:31.81 paperclient lscpu gives me below output: Architecture: x8664 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 32 On-line CPU(s) list: 0-31 Thread(s) per core: 2 Core(s) per socket: 8 Socket(s): 2 NUMA node(s): 2 Vendor ID: GenuineIntel CPU family: 6 Model: 45 Stepping: 7 CPU MHz: 2599.928 BogoMIPS: 5199.94 Virtualization: VT-x L1d cache: 32K L1i cache: 32K L2 cache: 256K L3 cache: 20480K NUMA node0 CPU(s): 0,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30 NUMA node1 CPU(s): 1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31.

%CPU - CPU Usage: The percentage of your CPU that is being used by the process. By default, top displays this as a percentage of a single CPU. On multi-core systems, you can have percentages that are greater than 100%. For example, if 3 cores are at 60% use, top will show a CPU use of 180%. See for more information. You can toggle this behavior by hitting Shift i while top is running to show the overall percentage of available CPUs in use. You can use htop instead.

To answer your question about how many cores and virtual cores you have: According to your lscpu output:. You have 32 cores ( CPU(s)) in total.

You have 2 physical sockets ( Socket(s)), each contains 1 physical processor. Each processor of yours has 8 physical cores ( Core(s) per socket) inside, which means you have 8. 2 = 16 real cores.

Db: 3.94:activity Monitor Shows Only One Cpu Core For Mac Pro

Each real core can have 2 threads ( Thread(s) per core), which means you have real cores. threads = 16. 2 = 32 cores in total. So you have 16 virtual cores and 16 real cores. Also see, and link.