On Friday 31 October 2008 04:06:44 Peter Teoh wrote: > check this out: > > http://osdir.com/ml/kernel.cpufreq/2004-07/msg00012.html > > from the reply, since the power management flag is at the per-core > level (check /proc/cpuinfo), all control can be done at the per-core > level, hard-ware wise. (not sure of Linux Kernel itself) This is for intel core2duo, not amd, but to address if the kernel will scale pr core or pr. chip. On my machine running 2.6.27.7 (standard ubuntu intrepid kernel), it will scale the to cores separatedly: *snip* model name : Intel(R) Core(TM)2 CPU 4300 @ 1.80GHz *snip* [ 15:01 ] henrikau@icarus:~ $ cat /proc/cpuinfo | grep "cpu MHz" cpu MHz : 1200.000 cpu MHz : 1800.000 So, the kernel is capable of scaling each core individually. > But at least 4 flags must be present (read above email): ts, ttp, fid, > vid. Is this the powernow-technology? > > I must also say this is the first time I am aware of these flags too :-). > > On Thu, Oct 30, 2008 at 2:06 PM, MinChan Kim <minchan.kim@xxxxxxxxx> wrote: > > Hi, all, > > > > I want to test CPUfreq function in AMD opteron quad-core series. > > But I am not sure linux in now can support CPUfreq for ADM opteron by per > > core ? What I mean is not controling to put together 2 core by one > > package but control by per core. > > After all, I want to control all 4 cpu separetely. > > > > Is is possible? If it is possible, What kinds of model can support ? > > > > -- > > Kinds regards, > > MinChan Kim > > > > -- > > To unsubscribe from this list: send an email with > > "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx > > Please read the FAQ at http://kernelnewbies.org/FAQ -- med Vennlig Hilsen - Yours Sincerely Henrik Austad
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