https://bugzilla.kernel.org/show_bug.cgi?id=73421 Bug ID: 73421 Summary: intel/p_state Does not increase into Turbo Boost states and does not display al governors. i5-3201M Product: Power Management Version: 2.5 Kernel Version: 3.13.7-200.fc20.x86_64 Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: high Priority: P1 Component: cpufreq Assignee: cpufreq@xxxxxxxxxxxxxxx Reporter: netsys@xxxxxxxxxxxxxxxxx Regression: No I have two problems with my CPU Intel Core i5-3210M on my laptop Lenovo B590. First, I cannot see all tipical governors availables such as ondemand, userspace, conservative... only I see powersave and performance with intel_pstate driver enabled. I see this result of cpupower frequency-info with pstate driver: "analyzing CPU 0: driver: intel_pstate CPUs which run at the same hardware frequency: 0 CPUs which need to have their frequency coordinated by software: 0 maximum transition latency: 0.97 ms. hardware limits: 1.20 GHz - 3.10 GHz available cpufreq governors: performance, powersave current policy: frequency should be within 1.20 GHz and 3.10 GHz. The governor "powersave" may decide which speed to use within this range. current CPU frequency is 2.77 GHz (asserted by call to hardware). boost state support: Supported: yes Active: yes 2900 MHz max turbo 4 active cores 2900 MHz max turbo 3 active cores 2900 MHz max turbo 2 active cores 3100 MHz max turbo 1 active cores" I can see on each cpu* file cpuinfo_max_freq with 3100000 values. I guess is available set frequency into 3.1Ghz. ... "# cat /sys/devices/system/cpu/cpu*/cpufreq/cpuinfo_max_freq 3100000 " Other way, turbostat display only 2.89 frecuencies of all cpus compiling a linux kernel for test porporsing with make -j5. This is display: "cor CPU %c0 GHz TSC SMI %c1 %c3 %c6 %c7 CTMP PTMP %pc2 %pc3 %pc6 %pc7 Pkg_W Cor_W GFX_W 99.78 2.89 2.49 0 0.22 0.00 0.00 0.00 61 61 0.00 0.00 0.00 0.00 18.24 13.54 1.64 0 0 99.80 2.89 2.49 0 0.20 0.00 0.00 0.00 60 61 0.00 0.00 0.00 0.00 18.24 13.54 1.64 0 1 99.78 2.89 2.49 0 0.22 1 2 99.92 2.89 2.49 0 0.08 0.00 0.00 0.00 61 1 3 99.62 2.89 2.49 0 0.38 " You can see how does not increase into 3.1Ghz per core. It's does not works properly Turbo Boost. Anyway intel_pstate is loaded correctly: " [ 0.852750] Intel pstate controlling: cpu 0 [ 0.852762] Intel pstate controlling: cpu 1 [ 0.852777] Intel pstate controlling: cpu 2 [ 0.852789] Intel pstate controlling: cpu 3 " Respect governors with intel_pstate=disabled at kernel command line boot. I can see all kernel's governors if I boot with intel_pstate=disable. That's using old ACPI driver called acpi_cpufreq. This is result of cpupower frequency-info: "analyzing CPU 0: driver: acpi-cpufreq CPUs which run at the same hardware frequency: 0 CPUs which need to have their frequency coordinated by software: 0 maximum transition latency: 10.0 us. hardware limits: 1.20 GHz - 2.50 GHz available frequency steps: 2.50 GHz, 2.50 GHz, 2.40 GHz, 2.30 GHz, 2.20 GHz, 2.10 GHz, 2.00 GHz, 1.90 GHz, 1.80 GHz, 1.70 GHz, 1.60 GHz, 1.50 GHz, 1.40 GHz, 1.30 GHz, 1.20 GHz available cpufreq governors: conservative, userspace, powersave, ondemand, performance current policy: frequency should be within 1.20 GHz and 2.50 GHz. The governor "ondemand" may decide which speed to use within this range. current CPU frequency is 1.20 GHz (asserted by call to hardware). boost state support: Supported: yes Active: yes 2900 MHz max turbo 4 active cores 2900 MHz max turbo 3 active cores 2900 MHz max turbo 2 active cores 3100 MHz max turbo 1 active cores " However, I saw on all cpuinfo_max_freq reported: "# cat /sys/devices/system/cpu/cpu*/cpufreq/cpuinfo_max_freq 2501000" It's not same that pstate that shows 3100000. However, includes switch governor into performance. Does not increases into 3.1Ghz when I was compiling a Linux kernel to test. This is same results that use intel_pstate: "cor CPU %c0 GHz TSC SMI %c1 %c3 %c6 %c7 CTMP PTMP %pc2 %pc3 %pc6 %pc7 Pkg_W Cor_W GFX_W 99.57 2.89 2.49 0 0.43 0.00 0.00 0.00 59 59 0.00 0.00 0.00 0.00 18.37 13.38 1.94 0 0 99.80 2.89 2.49 0 0.20 0.00 0.00 0.00 59 59 0.00 0.00 0.00 0.00 18.37 13.38 1.94 0 1 99.25 2.89 2.49 0 0.75 1 2 99.61 2.89 2.49 0 0.39 0.00 0.00 0.00 58 1 3 99.61 2.89 2.49 0 0.39 " It's likes bug on intel_pstate driver. At Lenovo BIOS Intel Speed Step and Turbo Boost It's enabled by default. -- You are receiving this mail because: You are the assignee for the bug. -- To unsubscribe from this list: send the line "unsubscribe cpufreq" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
