Just stumbled upon this thread while checking C-state usage on my different machines, which are all running RELENG-12.2. It seems my Compaq notebook (Core2Duo T6600) shows the same behaviour of neither C2 nor C3 being ever used:Well, that makes two. Any more?
Code:
dev.cpu.1.cx_method: C1/mwait/hwc C2/mwait/hwc C3/mwait/hwc/bma
dev.cpu.1.cx_usage_counters: 2152134 0 0
dev.cpu.1.cx_usage: 100.00% 0.00% 0.00% last 2634us
dev.cpu.1.cx_lowest: C3
dev.cpu.1.cx_supported: C1/1/1 C2/2/1 C3/3/57
dev.cpu.1.temperature: 43,0C
dev.cpu.1.coretemp.throttle_log: 0
dev.cpu.1.coretemp.tjmax: 100,0C
dev.cpu.1.coretemp.resolution: 1
dev.cpu.1.coretemp.delta: 57
dev.cpu.1.%parent: acpi0
dev.cpu.1.%pnpinfo: _HID=none _UID=0
dev.cpu.1.%location: handle=\_PR_.CPU1
dev.cpu.1.%driver: cpu
dev.cpu.1.%desc: ACPI CPU
dev.cpu.0.cx_method: C1/mwait/hwc C2/mwait/hwc C3/mwait/hwc/bma
dev.cpu.0.cx_usage_counters: 2105107 0 0
dev.cpu.0.cx_usage: 100.00% 0.00% 0.00% last 1056us
dev.cpu.0.cx_lowest: C3
dev.cpu.0.cx_supported: C1/1/1 C2/2/1 C3/3/57
dev.cpu.0.freq_levels: 2200/35000 1600/23000 1200/15000
dev.cpu.0.freq: 1200
dev.cpu.0.temperature: 43,0C
dev.cpu.0.coretemp.throttle_log: 0
dev.cpu.0.coretemp.tjmax: 100,0C
dev.cpu.0.coretemp.resolution: 1
dev.cpu.0.coretemp.delta: 57
dev.cpu.0.%parent: acpi0
dev.cpu.0.%pnpinfo: _HID=none _UID=0
dev.cpu.0.%location: handle=\_PR_.CPU0
dev.cpu.0.%driver: cpu
dev.cpu.0.%desc: ACPI CPU
dev.cpu.%parent:
Code:
dev.cpu.3.cx_usage: 2.20% 94.62% 3.16% last 3272us
dev.cpu.2.cx_usage: 4.91% 92.32% 2.75% last 911us
dev.cpu.1.cx_usage: 10.80% 87.59% 1.60% last 940us
dev.cpu.0.cx_usage: 6.44% 93.37% 0.18% last 180us
Code:
dev.cpu.3.cx_usage: 33.36% 43.27% 23.35% last 436us
dev.cpu.2.cx_usage: 32.77% 35.33% 31.89% last 376us
dev.cpu.1.cx_usage: 31.43% 32.92% 35.64% last 586us
dev.cpu.0.cx_usage: 34.09% 36.13% 29.76% last 661us