https://bugzilla.kernel.org/show_bug.cgi?id=71841 Bug ID: 71841 Summary: ignore_nice_load ignores real load Product: Power Management Version: 2.5 Kernel Version: 3.13.5 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: cpufreq Assignee: cpufreq@xxxxxxxxxxxxxxx Reporter: higuita@xxxxxxx Regression: No I have a AMD64 cpu (opteron 175) and it use the powernow_k8 cpufreq drive. I'm using the ondemand governor and have enables the "ignore_nice_load". Yet, i'm right now compiling the kernel 3.15.6 and notice that the cpufreq is stick on the 1GHz instead of working on the expected 2.2GHz. The kernel compile is running on the default nice level (ie: 0 ) If i disable the "ignore_nice_load", the cpufreq jumps to the 2.2GHz. 00:23:17 /sys/devices/system/cpu/cpufreq/ondemand/$ for i in *; do echo $i; cat $i ; done ignore_nice_load 1 io_is_busy 0 powersave_bias 0 sampling_down_factor 1 sampling_rate 107000 sampling_rate_min 10000 up_threshold 50 00:23:46 /sys/devices/system/cpu/cpufreq/ondemand/$ vmstat 5 procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu---- r b swpd free buff cache si so bi bo in cs us sy id wa 4 0 0 377948 157812 2752820 0 0 535 140 1191 768 73 8 15 3 3 0 0 336640 157824 2753364 0 0 82 18 2718 1616 91 9 0 0 3 0 0 347520 157832 2753688 0 0 18 2 2718 1601 92 8 0 0 3 0 0 363204 157848 2754132 0 0 41 457 2823 1641 91 9 0 0 3 0 0 396960 157856 2754488 0 0 44 2 2789 1681 90 10 0 0 ^C 00:24:43 /sys/devices/system/cpu/cpufreq/ondemand/$ cpufreq-info cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009 Report errors and bugs to cpufreq@xxxxxxxxxxxxxxx, please. analyzing CPU 0: driver: powernow-k8 CPUs which run at the same hardware frequency: 0 1 CPUs which need to have their frequency coordinated by software: 0 1 maximum transition latency: 107 us. hardware limits: 1000 MHz - 2.20 GHz available frequency steps: 2.20 GHz, 2.00 GHz, 1.80 GHz, 1000 MHz available cpufreq governors: ondemand, performance current policy: frequency should be within 1000 MHz and 2.20 GHz. The governor "ondemand" may decide which speed to use within this range. current CPU frequency is 1000 MHz (asserted by call to hardware). analyzing CPU 1: driver: powernow-k8 CPUs which run at the same hardware frequency: 0 1 CPUs which need to have their frequency coordinated by software: 0 1 maximum transition latency: 107 us. hardware limits: 1000 MHz - 2.20 GHz available frequency steps: 2.20 GHz, 2.00 GHz, 1.80 GHz, 1000 MHz available cpufreq governors: ondemand, performance current policy: frequency should be within 1000 MHz and 2.20 GHz. The governor "ondemand" may decide which speed to use within this range. current CPU frequency is 1000 MHz (asserted by call to hardware). 00:30:15 ~/$ cat /proc/cpuinfo processor : 0 vendor_id : AuthenticAMD cpu family : 15 model : 35 model name : Dual Core AMD Opteron(tm) Processor 175 stepping : 2 microcode : 0x4d cpu MHz : 1000.000 cache size : 1024 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 2 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt lm 3dnowext 3dnow rep_good nopl extd_apicid pni lahf_lm cmp_legacy bogomips : 2002.43 TLB size : 1024 4K pages clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: ts fid vid ttp processor : 1 vendor_id : AuthenticAMD cpu family : 15 model : 35 model name : Dual Core AMD Opteron(tm) Processor 175 stepping : 2 microcode : 0x4d cpu MHz : 1000.000 cache size : 1024 KB physical id : 0 siblings : 2 core id : 1 cpu cores : 2 apicid : 1 initial apicid : 1 fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt lm 3dnowext 3dnow rep_good nopl extd_apicid pni lahf_lm cmp_legacy bogomips : 2002.43 TLB size : 1024 4K pages clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: ts fid vid ttp -- 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
