Which is More Efficient?

Max Erickson maxerickson at gmail.com
Fri May 19 13:48:35 CEST 2006

"Dustan" <DustanGroups at gmail.com> wrote in
news:1148036087.843911.307990 at u72g2000cwu.googlegroups.com: 

> The task manager says "CPU Usage: 100%" when the program is
> running, and only when the program is running.
> Efficiency is a measure of 2 things: CPU usage and time. If you
> measure just time, you're not necessarily getting the efficiency.

A lot of people, when they say 'uses a lot of CPU' are leaving off 
'time'. I.e., CPU usage is pretty much talked about in terms of 
cycles, which is roughly utilization*time. Profiling tools often 
report both clock time and cpu time. Cpu time is a rough analog for 
cycles, clock time is self explanatory.


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