Messages in this thread | | | Subject | Re: [intel-pstate driver regression] processor frequency very high even if in idle | From | Srinivas Pandruvada <> | Date | Thu, 31 Mar 2016 08:06:06 -0700 |
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On Thu, 2016-03-31 at 07:39 -0700, Doug Smythies wrote: > On 2016.03.31 02:24 Jörg Otte wrote:
Hi Jörg,
Can you send me your kernel config file?
Thanks, Srinivas > > > jojo@fichte:/sys/devices/system/cpu/cpufreq/policy0$ cat > > scaling_governor > > powersave > > > > turbostat -i 1 --msr=0x199 > > CPUID(7): No-SGX > > CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199 > > - 45 1.74 2590 2496 0x00000000 > > 0 45 1.76 2565 2498 0x00000a00 > > 1 72 2.84 2548 2496 0x00000800 > > 2 30 1.11 2661 2496 0x00001a00 > > 3 33 1.23 2661 2495 0x00001a00 > > CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199 > > - 9 0.35 2525 2495 0x00000000 > > 0 1 0.04 2735 2495 0x00000800 > > 1 1 0.05 2501 2495 0x00000800 > > 2 17 0.65 2540 2495 0x00001a00 > > 3 16 0.64 2501 2495 0x00001a00 > > CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199 > > - 11 0.43 2523 2495 0x00000000 > > 0 3 0.11 2631 2495 0x00000c00 > > 1 7 0.27 2524 2495 0x00000800 > > 2 18 0.72 2527 2495 0x00001a00 > > 3 15 0.61 2501 2495 0x00001a00 > > Very Interesting. > > I would still like to get a trace sample to post process. > Copied from a previous e-mail: > > On an otherwise idle system, do: > > # perf record -a --event=power:pstate_sample sleep 300 > > If pressed for time, your sleep time can be less than 5 minutes, > but try to get at least 100 seconds. > > The resulting perf.data file will be too big to include as an > on-list attachment, but send it (or them) to me off-list for > post processing, and I'll report back. > > ... Doug > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-pm" > in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html
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