I have a dual-core processor. I'm running two instances of the program belowvoid void main(){    int i;    while(1){        i=i+1;    }}I run TOP and CPU usage gets up to 97%, however it never reaches 100%, why doesn't it? CPU is supposed to be always busy running the two programs with no I/O operation.How would the int overflow affect the memory?Does TOP actually show all the CPU usage or is there a percentage of the CPU reserved only for the SO that is not shown there? Are there processes of the SO that are not shown there?
Why does TOP never show cpu usage reaching 100%?
linux