This CPU should enable us to clock at 4200 MHz. # uname -a Linux xx 3.6.6 #9 SMP PREEMPT Mon Nov 5 12:32:30 CET 2012 x86_64 x86_64 x86_64 GNU/Linux # cat /proc/cpuinfo processor : 0 vendor_id : AuthenticAMD cpu family : 21 model : 16 model name : AMD A10-5800K APU with Radeon(tm) HD Graphics stepping : 1 microcode : 0x6001116 cpu MHz : 1400.000 cache size : 2048 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 2 apicid : 16 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 13 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 pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 popcnt aes xsave avx f16c lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs xop skinit wdt lwp fma4 tce nodeid_msr tbm topoext perfctr_core arat cpb hw_pstate npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold bmi1 bogomips : 7586.09 TLB size : 1536 4K pages clflush size : 64 cache_alignment : 64 address sizes : 48 bits physical, 48 bits virtual power management: ts ttp tm 100mhzsteps hwpstate cpb eff_freq_ro processor : 1 vendor_id : AuthenticAMD cpu family : 21 model : 16 model name : AMD A10-5800K APU with Radeon(tm) HD Graphics stepping : 1 microcode : 0x6001116 cpu MHz : 1400.000 cache size : 2048 KB physical id : 0 siblings : 4 core id : 1 cpu cores : 2 apicid : 17 initial apicid : 1 fpu : yes fpu_exception : yes cpuid level : 13 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 pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 popcnt aes xsave avx f16c lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs xop skinit wdt lwp fma4 tce nodeid_msr tbm topoext perfctr_core arat cpb hw_pstate npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold bmi1 bogomips : 7586.09 TLB size : 1536 4K pages clflush size : 64 cache_alignment : 64 address sizes : 48 bits physical, 48 bits virtual power management: ts ttp tm 100mhzsteps hwpstate cpb eff_freq_ro processor : 2 vendor_id : AuthenticAMD cpu family : 21 model : 16 model name : AMD A10-5800K APU with Radeon(tm) HD Graphics stepping : 1 microcode : 0x6001116 cpu MHz : 1400.000 cache size : 2048 KB physical id : 0 siblings : 4 core id : 2 cpu cores : 2 apicid : 18 initial apicid : 2 fpu : yes fpu_exception : yes cpuid level : 13 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 pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 popcnt aes xsave avx f16c lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs xop skinit wdt lwp fma4 tce nodeid_msr tbm topoext perfctr_core arat cpb hw_pstate npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold bmi1 bogomips : 7586.09 TLB size : 1536 4K pages clflush size : 64 cache_alignment : 64 address sizes : 48 bits physical, 48 bits virtual power management: ts ttp tm 100mhzsteps hwpstate cpb eff_freq_ro processor : 3 vendor_id : AuthenticAMD cpu family : 21 model : 16 model name : AMD A10-5800K APU with Radeon(tm) HD Graphics stepping : 1 microcode : 0x6001116 cpu MHz : 1400.000 cache size : 2048 KB physical id : 0 siblings : 4 core id : 3 cpu cores : 2 apicid : 19 initial apicid : 3 fpu : yes fpu_exception : yes cpuid level : 13 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 pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 popcnt aes xsave avx f16c lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs xop skinit wdt lwp fma4 tce nodeid_msr tbm topoext perfctr_core arat cpb hw_pstate npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold bmi1 bogomips : 7586.09 TLB size : 1536 4K pages clflush size : 64 cache_alignment : 64 address sizes : 48 bits physical, 48 bits virtual power management: ts ttp tm 100mhzsteps hwpstate cpb eff_freq_ro # cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies 3800000 3400000 2900000 2400000 1900000 1400000 Please do note the lack of the 4200 Mhz.
# grep k8 dmesg-3.6.6.txt powernow-k8: Found 1 AMD A10-5800K APU with Radeon(tm) HD Graphics (4 cpu cores) (version 2.20.00) powernow-k8: Core Performance Boosting: on. powernow-k8: 0 : pstate 0 (3800 MHz) powernow-k8: 1 : pstate 1 (3400 MHz) powernow-k8: 2 : pstate 2 (2900 MHz) powernow-k8: 3 : pstate 3 (2400 MHz) powernow-k8: 4 : pstate 4 (1900 MHz) powernow-k8: 5 : pstate 5 (1400 MHz) Please do note the lack of the 4200 Mhz.
# cpupower frequency-info analyzing CPU 0: driver: powernow-k8 CPUs which run at the same hardware frequency: 0 CPUs which need to have their frequency coordinated by software: 0 maximum transition latency: 8.0 us. hardware limits: 1.40 GHz - 3.80 GHz available frequency steps: 3.80 GHz, 3.40 GHz, 2.90 GHz, 2.40 GHz, 1.90 GHz, 1.40 GHz available cpufreq governors: userspace, ondemand, performance current policy: frequency should be within 1.40 GHz and 3.80 GHz. The governor "ondemand" may decide which speed to use within this range. current CPU frequency is 1.40 GHz (asserted by call to hardware). cpufreq stats: 3.80 GHz:7.78%, 3.40 GHz:0.21%, 2.90 GHz:0.30%, 2.40 GHz:0.34%, 1.90 GHz:0.47%, 1.40 GHz:90.90% (829881) boost state support: Supported: yes Active: yes Boost States: 2 Total States: 8 Pstate-Pb0: 4200MHz (boost state) Pstate-Pb1: 4200MHz (boost state) Pstate-P0: 3800MHz Pstate-P1: 3400MHz Pstate-P2: 2900MHz Pstate-P3: 2400MHz Pstate-P4: 1900MHz Pstate-P5: 1400MHz Please note the 4200 MHz!
I have a A8-5500 and it has the "official" non-turbo states listed by powernow-k8, just like yours. # cpufreq-info cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009 Report errors and bugs to cpufreq@vger.kernel.org, please. 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: 4.0 us. hardware limits: 1.40 GHz - 3.20 GHz available frequency steps: 3.20 GHz, 2.90 GHz, 2.60 GHz, 2.20 GHz, 1.80 GHz, 1.40 GHz available cpufreq governors: userspace, powersave, conservative, ondemand, performance current policy: frequency should be within 1.40 GHz and 3.20 GHz. The governor "ondemand" may decide which speed to use within this range. current CPU frequency is 2.60 GHz (asserted by call to hardware). cpufreq stats: 3.20 GHz:27.97%, 2.90 GHz:1.41%, 2.60 GHz:1.65%, 2.20 GHz:0.96%, 1.80 GHz:0.87%, 1.40 GHz:67.15% (10603) But, if i use cpufreq-aperf to monitor the frequencies, i get something like this (compile with 3 threads): cpufreq-aperf -o CPU Average freq(KHz) Time in C0 Time in Cx C0 percentage 000 3488000 00 sec 847 ms 00 sec 152 ms 84 001 3488000 00 sec 618 ms 00 sec 381 ms 61 002 3488000 00 sec 908 ms 00 sec 091 ms 90 003 3488000 00 sec 912 ms 00 sec 087 ms 91 Which is above th 3.2 frequency and, granted, below the advertised 3.7 Turbo. Also, what you see in cpuinfo and the like isnt always true - i used the old radeon driver and despite having 3.2 GHz in cpuinfo as active p-state, cpufreq-aperf gave ~1.4 GHz as zctive frequency. And most likely had it right because i spent an eternity compiling the kernel in that state.
While using turbostat and making the PC do some work I see updates like: cor CPU GHz TSC 4.18 3.89 0 0 4.15 3.89 1 1 4.17 3.89 2 2 4.21 3.89 3 3 4.21 3.89 (yes, slight overclock)
Duplicate of bug 81021 I guess?