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by Chee Seng Chua.
Original Post: i7's Turbo-Boost in Action
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The following steps in Ubuntu Natty show turbo-boost in action on my new laptop, which is quadcore 2.0GHz, boost-able to 2.8/2.9GHz:- sudo apt-get install acpidump sudo modprobe msr sudo turbostat
Turbostat shows the following stat while my laptop is not doing heavy thing:- CPU GHz TSC avg 0.80 2.00 0 0.80 2.00 1 0.80 2.00 2 0.80 2.00 3 0.80 2.00 4 0.81 2.00 5 0.80 2.00 6 0.80 2.00 7 0.80 2.00
Let's make the processor's cores busy, open another terminal and enter:- while :; do :; done
Now the stat shows:- CPU GHz TSC avg 2.86 2.00 0 2.77 2.00 1 2.87 2.00 2 2.70 2.00 3 2.74 2.00 4 2.77 2.00 5 2.81 2.00 6 2.76 2.00 7 2.77 2.00
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