[jzdziarski]

Is there any way to check the speed the cpu is throttled down to when in 'Automatic' or 'Reduced' ? I would have thought that sysctl hw.cpufrequency or cpufrequency_min/max would tell me, but they don't seem to change, even when I set my preferences, use pmset, or unplug the laptop. I'd really like to find out what speed it's running at at any given time.

[Ruahrc]

I'm curious about this too- One way I thought of doing this would be to estimate it via experimentation. Find some calculation task or program (like multiply two 10000x10000 matrices) that is basically totally CPU dependent, and measure the time it takes to do it on highest, auto, and low. the times should roughly be proportional to the CPU frequency, and since you know that highest is YYY GHz (whichever model you have) you can scale it from there. I know of no such program so far though- although it would be easy to write, for example in Matlab.

Ruahrc

[jzdziarski]

anyone?

[Big Mac]

Interesting question. I bet you could look at Apple's developer docs for the information.