Intel's P-State Driver Is Getting Better Tuned For Performance

[phoronix]

Phoronix: Intel's P-State Driver Is Getting Better Tuned For Performance

The Intel P-State driver that's found in modern versions of the Linux kernel as a replacement to the older CPUfreq code is getting tuned for better performance while boasting greater power-savings...

http://www.phoronix.com/vr.php?view=MTY3Mzg

[Nuc!eoN]

Does anyone know if also the first gen Core i5's will be supported, e.g. my i5-750? I can't find any information whatsoever on it..

[rikkinho]

hm!

Does anyone know if also the first gen Core i5's will be supported, e.g. my i5-750? I can't find any information whatsoever on it..

you only need to check if its working or not if you are using ubuntu use this command in terminal "cpufreq-info"

[WorBlux]

Saving the world, one gram of carbon at a time. 0.35% is nice, but here's hoping for 3.5%.

[toyotabedzrock]

You would think Intel would throw more resources behind this type of code to make sure energy and performance was as good as it could get.

[uwgandalf]

I don't know if this has to do with the articles subject, but I found it strange that when compiling on my kubuntu install it easily took 2 times longer to compile various software compared to OSX on the same machine. I saw that the CPU never clocked to its max state. Lowering a threshold somewhere(don't remember exactly) in proc/sysfs remedied this.

[saski]

Nice to see there is still some efford to make the CPU more power efficient. But what about the Package state issues? My Haswell i7 w/o discrete gpu still won't enter PC7 when idle resulting in approx twice as much power drain compared to my old SNB i7.

[josipva]

when compiling on my kubuntu install it easily took 2 times longer to compile

Ubuntu disables P-State driver by default in their kernel.

[Calinou]

Are there software ways to measure power usage on a non-Windows OS?

[saski]

Yes! sysfs provides access to Battery properties such as discharge current.