What does _ACPI suffix mean? about powertop HOT 5 OPEN

On Mon, Oct 30, 2023 at 3:20 PM Daniel Lo Nigro ***@***.***> wrote: One system gives me output like this: Pkg(HW) | Core(HW) | CPU(OS) 0 | | C0 active 2.8% | | POLL 0.0% 0.0 ms | | C1 1.1% 0.4 ms C2 (pc2) 7.2% | | C3 (pc3) 5.5% | C3 (cc3) 0.0% | C3 0.1% 0.1 ms C6 (pc6) 1.5% | C6 (cc6) 1.9% | C6 2.2% 0.6 ms C7 (pc7) 75.2% | C7 (cc7) 92.8% | C7s 0.0% 0.0 ms C8 (pc8) 0.0% | | C8 21.5% 2.5 ms C9 (pc9) 0.0% | | C9 0.0% 0.0 ms C10 (pc10) 0.0% | | | | C10 72.8% 12.5 ms | | C1E 0.4% 0.2 ms | Core(HW) | CPU(OS) 1 while another gives output like this: Pkg(HW) | Core(HW) | CPU(OS) 0 CPU(OS) 1 | | C0 active 5.9% 0.9% | | POLL 0.1% 0.0 ms 0.0% 0.0 ms | | C1_ACPI 14.2% 0.2 ms 1.0% 0.1 ms C2 (pc2) 0.0% | | C2_ACPI 39.2% 0.8 ms 27.0% 0.9 ms C3 (pc3) 0.0% | C3 (cc3) 0.0% | C3_ACPI 33.6% 1.2 ms 69.7% 3.0 ms C6 (pc6) 0.0% | C6 (cc6) 1.1% | C7 (pc7) 0.0% | C7 (cc7) 0.0% | C8 (pc8) 0.0% | | C9 (pc9) 0.0% | | C10 (pc10) 0.0% | | | Core(HW) | CPU(OS) 2 CPU(OS) 3 What's the difference between "C3" and "C3_ACPI", and why would the second system have fewer states? (first one is an i5-9500 while the second one is an i5-13500, both with C-states enabled in the BIOS) — Reply to this email directly, view it on GitHub <#140>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAJ54FKUCOJAAJ5BA2DBSTTYCAR2JAVCNFSM6AAAAAA6WXWLSKVHI2DSMVQWIX3LMV43ASLTON2WKOZRHE3DSMZRGQ3TAMI> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

On Mon, Oct 30, 2023 at 4:54 PM Daniel Lo Nigro ***@***.***> wrote: Hmm, that's interesting, because it does seem like intel_idle is active? ***@***.***:~# cat /sys/devices/system/cpu/cpuidle/current_driver intel_idle It's an i5-13500 running on Linux 6.1.38. I'll have to figure out how to investigate this more. Can any of the cpufreq settings affect this? — Reply to this email directly, view it on GitHub <#140 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAJ54FNOE4RXDHFBE72DZYTYCA45BAVCNFSM6AAAAAA6WXWLSKVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMYTOOBWGIZDGNRYGE> . You are receiving this because you commented.Message ID: ***@***.***>