Messages in this thread | | | Date | Wed, 12 May 2004 17:28:38 +0200 | From | clemens kurtenbach <> | Subject | cpufreq and p4 prescott |
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Hi,
i have problems scaling down my p4 prescott 2.8 GHz. In the /sys -tree all seems to be ok:
[ck@holodeck:cpufreq] pwd /sys/devices/system/cpu/cpu0/cpufreq
[ck@holodeck:cpufreq] ls -1 cpuinfo_max_freq cpuinfo_min_freq scaling_available_frequencies scaling_available_governors scaling_driver scaling_governor scaling_max_freq scaling_min_freq scaling_setspeed
[ck@holodeck:cpufreq] cat * 2800000 350000 350000 700000 1050000 1400000 1750000 2100000 2450000 2800000 powersave userspace performance p4-clockmod userspace 2800000 350000 350000
[ck@holodeck:cpufreq] cat /proc/cpuinfo | grep Mhz cpu MHz : 2807.131 cpu MHz : 2807.131
As you can see tools like cpudyn or powernowd successfully change the entry in scaling_setspeed (also for cpu1), but the real cpu clock stays at 2.8GHz ?
The cpudyn doc sais there's support for 'Intel Pentium 4, Intel Xeon' CPU's, but is there support for p4 prescott ?
Has annyone here successfully scaled down a prescott ?
regards, clee -- moqua [at] gmx.net moqua [at] kurtenba.ch - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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