https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=289387
Steve King <[email protected]> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |[email protected] --- Comment #1 from Steve King <[email protected]> --- AIUI cx_usage is the amount of time a cpu spends in a given C state, you seem to only have one C state active therefore the cpu spends 100% of its time in it. So not directly related to CPU load as shown by top. Have you got performance_cx_lowest="Cmax" set in rc.conf. This the out from my cpu: $ sysctl -a | grep cx_ hw.acpi.cpu.cx_lowest: C8 dev.cpu.3.cx_method: C1/mwait/hwc C2/mwait/hwc C3/mwait/hwc dev.cpu.3.cx_usage_counters: 67455451 94463362 175741864 dev.cpu.3.cx_usage: 19.97% 27.97% 52.04% last 29us dev.cpu.3.cx_lowest: C8 dev.cpu.3.cx_supported: C1/1/1 C2/2/253 C3/3/1048 dev.cpu.2.cx_method: C1/mwait/hwc C2/mwait/hwc C3/mwait/hwc dev.cpu.2.cx_usage_counters: 65856084 90971269 171281055 dev.cpu.2.cx_usage: 20.07% 27.72% 52.20% last 779us dev.cpu.2.cx_lowest: C8 dev.cpu.2.cx_supported: C1/1/1 C2/2/253 C3/3/1048 dev.cpu.1.cx_method: C1/mwait/hwc C2/mwait/hwc C3/mwait/hwc dev.cpu.1.cx_usage_counters: 65724627 90757058 170987417 dev.cpu.1.cx_usage: 20.07% 27.71% 52.21% last 4us dev.cpu.1.cx_lowest: C8 dev.cpu.1.cx_supported: C1/1/1 C2/2/253 C3/3/1048 dev.cpu.0.cx_method: C1/mwait/hwc C2/mwait/hwc C3/mwait/hwc dev.cpu.0.cx_usage_counters: 65670120 89806406 173626997 dev.cpu.0.cx_usage: 19.95% 27.28% 52.75% last 2385us dev.cpu.0.cx_lowest: C8 dev.cpu.0.cx_supported: C1/1/1 C2/2/253 C3/3/1048 As you can see I have 3 active states C1,c2,C3. Note the cpu manages the c states itself. -- You are receiving this mail because: You are the assignee for the bug.
