https://bugzilla.kernel.org/show_bug.cgi?id=72211 Bug ID: 72211 Summary: intel_pstate Haswell CPU is not entering hardware package idle state Product: Power Management Version: 2.5 Kernel Version: 3.13.6 Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: cpufreq Assignee: cpufreq@xxxxxxxxxxxxxxx Reporter: opensource@xxxxxxxxxxxxxx Regression: No Created attachment 129641 --> https://bugzilla.kernel.org/attachment.cgi?id=129641&action=edit Kernel Config (Archlinux) Intel Pentium G3220 is not reaching package idle states above PC3. CPU is in C6 for over 99% (no C7 on pentium). Package idle states start with 97% in PC2. After five minute idle they drop to 97% PC3. But they never enter PC6. Kernel (archlinux), Linux eagle 3.13.6-1-ARCH #1 SMP PREEMPT Fri Mar 7 22:47:48 CET 2014 x86_64 GNU/Linux config is attached. I tried 3.14-rc6 with similiar results. turbostat output is below. [root@eagle ~]# turbostat -v turbostat v3.5 April 26, 2013 - Len Brown <lenb@xxxxxxxxxx> CPUID(0): GenuineIntel 13 CPUID levels; family:model:stepping 0x6:3c:3 (6:60:3) CPUID(6): APERF, DTS, PTM, EPB 30 * 100 = 3000 MHz TSC frequency cpu0: MSR_IA32_POWER_CTL: 0x0004005d (C1E auto-promotion: DISabled) cpu0: MSR_NHM_SNB_PKG_CST_CFG_CTL: 0x1e000403 (UNdemote-C3, UNdemote-C1, demote-C3, demote-C1, UNlocked: pkg-cstate-limit=3: pc6) cpu0: MSR_NHM_TURBO_RATIO_LIMIT: 0x1e1e1e1e 30 * 100 = 3000 MHz max turbo 4 active cores 30 * 100 = 3000 MHz max turbo 3 active cores 30 * 100 = 3000 MHz max turbo 2 active cores 30 * 100 = 3000 MHz max turbo 1 active cores cpu0: MSR_IA32_ENERGY_PERF_BIAS: 0x00000006 (balanced) cpu0: MSR_RAPL_POWER_UNIT: 0x000a0e03 (0.125000 Watts, 0.000061 Joules, 0.000977 sec.) cpu0: MSR_PKG_POWER_INFO: 0x000001a8 (53 W TDP, RAPL 0 - 0 W, 0.000000 sec.) cpu0: MSR_PKG_POWER_LIMIT: 0x428212001a81a8 (UNlocked) cpu0: PKG Limit #1: ENabled (53.000000 Watts, 8.000000 sec, clamp DISabled) cpu0: PKG Limit #2: ENabled (66.250000 Watts, 0.002441* sec, clamp DISabled) cpu0: MSR_PP0_POLICY: 0 cpu0: MSR_PP0_POWER_LIMIT: 0x00000000 (UNlocked) cpu0: Cores Limit: DISabled (0.000000 Watts, 0.000977 sec, clamp DISabled) cpu0: MSR_PP1_POLICY: 0 cpu0: MSR_PP1_POWER_LIMIT: 0x00000000 (UNlocked) cpu0: GFX Limit: DISabled (0.000000 Watts, 0.000977 sec, clamp DISabled) cpu0: MSR_IA32_TEMPERATURE_TARGET: 0x00641400 (100 C) cpu0: MSR_IA32_PACKAGE_THERM_STATUS: 0x88490000 (27 C) cpu0: MSR_IA32_THERM_STATUS: 0x88490000 (27 C +/- 1) cpu1: MSR_IA32_THERM_STATUS: 0x88490000 (27 C +/- 1) cor CPU %c0 GHz TSC SMI %c1 %c3 %c6 %c7 0.13 2.99 2.99 0 0.02 0.00 99.85 0.00 0 0 0.22 2.99 2.99 0 0.02 0.00 99.77 0.00 1 1 0.03 2.99 2.99 0 0.03 0.00 99.94 0.00 CTMP PTMP %pc2 %pc3 %pc6 %pc7 Pkg_W Cor_W GFX_W 26 28 2.11 97.50 0.00 0.00 10.30 0.03 0.00 26 28 2.11 97.50 0.00 0.00 10.30 0.03 0.00 25 -- 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
