CPU - Processor Core
Table of Contents
1 - About
Processing performance of computers is increased by using multi-core processors, which essentially is plugging two or more individual processor (called cores in this sense) into one integrated circuit.
“processor” and “processor package” are often synonymous.
Ideally, a dual core processor would be nearly twice as powerful as a single core processor. In practice, however, the performance gain is far less, only about fifty percent,due to, e.g.:
- imperfect software algorithms
- and implementation.
An individual processing unit that is capable of executing instructions and doing computational work.
2 - Articles Related
3 - Concurrency
A computer system normally has many active processes and threads. This is true even in systems that only have a single execution core, and thus only have one thread actually executing at any given moment.
Concurrency is possible even on simple systems, without multiple processors or execution cores.
Processing time for a single core is shared among processes and threads through an OS feature called time slicing.
4 - Properties
4.1 - word length
5 - Number of core
5.1 - Redhat
grep 'model name' /proc/cpuinfo | wc -l
The max cpu load is then 40
5.2 - Aix
lsdev -C -c processor
proc0 Available 00-00 Processor proc4 Available 00-04 Processor proc8 Available 00-08 Processor proc12 Defined 00-12 Processor