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Date: Sat, 18 Nov 2006 01:18:19 +0530 From: "Dhaval Giani" <dhaval.giani@...il.com> To: "Pallipadi, Venkatesh" <venkatesh.pallipadi@...el.com> Cc: davej@...emonkey.org.uk, linux-kernel@...r.kernel.org Subject: Re: cpufreq userspace governor does not reflect changes Hey, On 11/18/06, Pallipadi, Venkatesh <venkatesh.pallipadi@...el.com> wrote: > > /sys/devices/....../cpuX/cpufreq/scaling_cur_freq > Gives you the information about last frequency that Linux tried to set > on this CPU > > /sys/devices/....../cpuX/cpufreq/cpuinfo_cur_freq > (When supported) Gives you the information about actual frequency that > the CPU is running at. > > Zero frequency value below is certainly a bug in the driver. What is the > kernel you are using? Ooops! sorry missed that one. Its the 2.6.19-rc5-mm2. Its having the same .config which i posted on the bugzilla. Do you want the acpidump again? > On the particular CPU you have here, all cores in a package indeed share > the frequency. But, it does not really show up in affected_cpus as OS is > not coordinating the shared-ness of P-state across cores. That means, OS > programs each core individually based on CPU utilization and hardware > will pick the highest frequency among the two and run both cores at that > frequency. > Hold on, so let me get it right. When i do an echo 1596000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed, the cpu cores will still be running at 1.86 Ghz since the other core is at that frequency? In this situation how do I then change the frequency? Thanks Dhaval - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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