How do SMP cores, processes, and threads work together exactly?

Question

On a single core CPU, each process runs in the OS, and the CPU jumps around from one process to another to best utilize itself. A process can have many threads, in which cas

Answer 1

If there is one thread application which has say 10 threads, initially it will start on the same CPU/core.over a period of time the multiple threads will be distributed to other cores/cpus due to the load balancer in Linux. If there are multiple such thread applications are there,I think all the application threads mostly run on the same core/cpu as the locals/globals of the threads are readily available in l1/l2 cache of the core in which they were running.Moving them out of the core is time consuming than their execution time.If the threads need be run in a different core.I think one has to supply the affinity info to the thread.