Re: How to limit CPU usage within C++ (Linux)

[Matthias Buelow]

Joe Greer wrote:

A cpu which isn't running at 100% is actually just throwing the
remaining cycles away.

Modern CPUs don't "throw cycles away", they halt execution if there's
nothing to do and consume far less energy that way.

[Puppet_Sock]

On Aug 19, 8:14*am, Matthias Buelow <[e-mail]:

Joe Greer wrote:

A cpu which isn't running at 100% is actually just throwing the
remaining cycles away.

Modern CPUs don't "throw cycles away", they halt execution if there's
nothing to do and consume far less energy that way.

For suitable values of "halt." The CPU does not actually
halt, but simply goes into a state of doing a lot less.

It is true that a CPU that is in an "idle" mode will be
using less power.
Socks

[Matthias Buelow]

Puppet_Sock wrote:

>Modern CPUs don't "throw cycles away", they halt execution if there's
nothing to do and consume far less energy that way.

For suitable values of "halt." The CPU does not actually
halt, but simply goes into a state of doing a lot less.

I did not write the "CPU halts", only that it halts execution (of
instruction code), which is exactly what the i386 is doing, for example,
if it encounters the HLT instruction (which, to my knowledge, systems
such as Linux, *BSD and probably Windoze, too, exploit.)