Date: Wed, 28 Sep 2005 14:49:32 +0200 From: Emanuel Strobl <Emanuel.strobl@gmx.net> To: freebsd-questions@freebsd.org Subject: acpi_thorttle and cpufreq/ichss questions Message-ID: <200509281449.40834@harrymail>
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[-- Attachment #1 --] Hello, my laptop (PIII LV) runs fine with cpufreq and ichss: dev.ichss.0.%desc: SpeedStep ICH dev.ichss.0.%driver: ichss dev.ichss.0.%parent: cpu0 dev.ichss.0.freq_settings: 794/-1 497/-1 If I understand the output correctly i have two SpeedSteps, the full 800MHz (with higher voltage) and 500MHz. But now I also have acpi_throttle (if I don't disable it in /boot/loader.conf): dev.acpi_throttle.0.%desc: ACPI CPU Throttling dev.acpi_throttle.0.%driver: acpi_throttle dev.acpi_throttle.0.%parent: cpu0 dev.acpi_throttle.0.freq_settings: 10000/-1 8750/-1 7500/-1 6250/-1 5000/-1 3750/-1 2500/-1 1250/-1 What do these values tell me? I think that are divisors, but how can I see which one is used? I remember that some time back I saw at boot time some information about "throttle has xx steps, currently using 100%" or something like that. Can I constrain the divisors, lets say I want to have only 10000, 7500 and 5000? (I know I can limit the lowest frequency cpufreq may use with "debug.cpufreq.lowest=310" but then I don't know if it throttles the 800MHz mode (thus using high core voltage) or if it throttles the power saving 500MHz mode) And what does this tell me: hw.acpi.cpu.cx_supported: C1/0 C2/10 C3/85 hw.acpi.cpu.cx_lowest: C1 hw.acpi.cpu.cx_usage: 100.00% 0.00% 0.00% Thanks in advance, -Harry [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (FreeBSD) iD8DBQBDOpFkBylq0S4AzzwRAozLAJsH3e15N8+wbUj7B54STTT2ePwAtACfWjnK gstF4hvE8mtqzzu0+M2eGbM= =0U0j -----END PGP SIGNATURE-----
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