On 2016.03.31 02:24 Jörg Otte wrote: > 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
