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cpudyn on G4 doesnt change speed
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MaDDeePee
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Joined: 18 Aug 2004
Posts: 350
Location: Germany

PostPosted: Mon Aug 15, 2005 10:09 pm    Post subject: cpudyn on G4 doesnt change speed Reply with quote

Hi guys,

i ran into problems using cpudyn on my ibook g4 1.2Gz!

Im running pbbuttonsd, pmud and cpudyn.

cat /proc/cpuinfo ALLWAYS shows 599Mhz Clock and 589 Bogomips.

Kernel config this related:
Processor --->
[*] CPU Frequency scaling
[] Enably CPUfreq debugging
<*> CPU frequency translation statistics
[*] CPU frequency translation statistics details

--- noting selected til:

[*] Support for Apple powerbooks

Does i need to select any Governor in kernel to get the automatically speed adjusting working?

(To confirm this problem, i was compiling kde in cons1 and comparing /proc/cpuinfo on cons2 which allways shows LOW SPEED)

Yours
:)
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heavyt
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Joined: 03 Mar 2003
Posts: 498
Location: Matrix (Washington,DC)

PostPosted: Tue Aug 16, 2005 1:47 am    Post subject: Reply with quote

I don't think you need pmud, pbbuttonsd does all that pmud does. See what happens if you remove pmud.

this is what I have in my kernel (TiBook),
Code:

# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE=y
CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
CONFIG_CPU_FREQ_GOV_POWERSAVE=y
CONFIG_CPU_FREQ_GOV_USERSPACE=y
CONFIG_CPU_FREQ_GOV_ONDEMAND=y
CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y
CONFIG_CPU_FREQ_PMAC=y


I don't know if you need all that I have set in my kernel.
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Semicarbazid
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Joined: 23 Oct 2005
Posts: 28

PostPosted: Thu Oct 27, 2005 12:07 pm    Post subject: Reply with quote

I have the same problem. Even when I compile something, my /proc/cpufreq shows 666MHz, which is low speed in my case. Where is the problem?

Thanks and greetings,
Semi
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Semicarbazid
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Joined: 23 Oct 2005
Posts: 28

PostPosted: Thu Oct 27, 2005 12:23 pm    Post subject: Reply with quote

Ok, found the solution. You need also the performance governor compiled into your kernel, otherwise cpudynd isn't able to set your CPU speed to maximum.

Greetings, Semi
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fuoco
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Joined: 23 May 2004
Posts: 386
Location: Israel

PostPosted: Fri Oct 28, 2005 10:21 pm    Post subject: Reply with quote

cpudyn uses powersave and performance governors instead of using userspace one. I didn't have good experience with it on my iBook, it kept staying on 100% most of the time, hardly reducing it. That's with the default setup. I now use powernowd and it's a bit better but still I'm not happy with it pushing to 100% quite often.
Anyone with better experience with either ?
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stimuli
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Joined: 16 Dec 2002
Posts: 292
Location: Vancouver, BC, Canada

PostPosted: Tue Nov 01, 2005 4:29 am    Post subject: Reply with quote

I've had nothing but great performance from cpudyn.... defaults at 667mhz and spikes to 867mhz on my TiBook G4 as needed. If your iBook is at 100% when not under heavy usage you have something misconfigured, either in pbbuttonsd.conf, kernel, or cpudynd.conf
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fuoco
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Joined: 23 May 2004
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PostPosted: Tue Nov 01, 2005 6:57 am    Post subject: Reply with quote

stimuli wrote:
I've had nothing but great performance from cpudyn.... defaults at 667mhz and spikes to 867mhz on my TiBook G4 as needed. If your iBook is at 100% when not under heavy usage you have something misconfigured, either in pbbuttonsd.conf, kernel, or cpudynd.conf


No my iBook is not at 100% constantly, but every small change like moving windows aroud or even changing the focus to another window causes cpudyn to max the freq. There's no cpudyn.conf file only /etc/conf.d/cpudyn - could you post yours - maybe it has better configuration than I have been able to come out with.
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