cpudyn vs. cpuspeed vs. powernowd

cwt137 · Posted: Mon Mar 15, 2004 7:35 pm Post subject: cpudyn vs. cpuspeed vs. powernowd

After messing arround for months, am almost to a good point with my compaq presario 2195us notebook and gentoo. I am now working on cpu scaling.

What program do you guys use on your laptop? I have found 3 programs that do freq. scaling. Which one of the three above is best? I know cpuspeed is used by fc2 test1 but I don't know anything about the other two.

Chris

gmichels · Guru Joined: 20 Jun 2003 Posts: 480 Location: Brazil

I use cpudynd on my hp ze4430us and it works perfectly. The only glitch is that I had to apply a kernel patch so that the frequency tables are correctly detected. Using 2.6.4-love1 here.

Earthwings · Posted: Mon Mar 15, 2004 7:49 pm Post subject:

speedfreq is another possibility

mmmsoap · n00b Joined: 29 Feb 2004 Posts: 13 Location: Boston, MA

I was under the impression that cpudyn only gave you two different states, slow and fast, switching between the lowest CPU state when possible and bumping up to the fastest state when needed. But there's no middle ground available.

Is this not correct?

I have had some good success with cpufreqd, because by editing /etc/cpufreqd.conf you can set your own parameters based on the battery/ac states, etc. My only current issue is that the available CPU frequencies is different when the AC adapter is plugged in or not at boot, which can make some things a little screwy.