What is a “tight loop”?

Question

I\'ve heard that phrase a lot. What does it mean?

An example would help.

Answer 1

From experience, I've noticed that if ever you're trying to do a loop that runs indefinitely, for instance something like:

while(true)
{
    //do some processing
}

Such a loop will most likely always be resource intensive. If you check the CPU and Memory usage by the process with this loop, you will find that it will have shot up. Such is the idea some people call a "tight loop".