Date: Sat, 19 Feb 2005 19:11:35 +0100 From: Morten Rodal <morten@rodal.no> To: Nate Lawson <nate@root.org> Cc: current@freebsd.org Subject: Re: HEADSUP: cpufreq import complete, acpi_throttling changed Message-ID: <200502191911.36228.morten@rodal.no> In-Reply-To: <42068A5C.1030300@root.org> References: <42068A5C.1030300@root.org>
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On Sunday 06 February 2005 22:21, Nate Lawson wrote: > If you have throttling, please test the new configuration to be sure it > still works as before. Final upcoming work will be manpage support and > bugfixing as necessary. > Throttling used to work on my Dell Inspiron 8200, but with the new cpufreq/acpi_perf I only get errors when trying to set a new cpu frequency, like this: # sysctl dev.cpu.0.freq=1200 acpi_perf0: Px transition to 1200 failed acpi_perf0: set freq failed, err 6 Regardless of what value I use, it either says 'Px transition to 1200 failed' or 'Px transition to 1700 failed.' Here's more info from various sysctl's: # sysctl hw.acpi.cpu hw.acpi.cpu.cx_supported: C1/0 C2/50 hw.acpi.cpu.cx_lowest: C2 hw.acpi.cpu.cx_usage: 0.00% 100.00% # sysctl dev.cpu dev.cpu.0.%desc: ACPI CPU (2 Cx states) dev.cpu.0.%driver: cpu dev.cpu.0.%location: handle=\_PR_.CPU0 dev.cpu.0.%pnpinfo: _HID=none _UID=0 dev.cpu.0.%parent: acpi0 dev.cpu.0.freq: 1700 dev.cpu.0.freq_levels: 1700/0 1487/0 1275/0 1200/0 1062/0 900/0 850/0 750/0 637/0 600/0 450/0 425/0 300/0 212/0 150/0 If I remember correctly the old interface said something about 8 throttling states ranging from 12.X% to 100%, but I seem to have many more freq_levels now? The CPU is a Pentium 4 Mobile 1.7GHz # dmesg | grep -i cpu CPU: Intel(R) Pentium(R) 4 Mobile CPU 1.70GHz (1695.01-MHz 686-class CPU) cpu0: <ACPI CPU (2 Cx states)> on acpi0 acpi_perf0: <ACPI CPU Frequency Control> on cpu0 acpi_throttle0: <ACPI CPU Throttling> on cpu0 -- Morten Rodal "A supercomputer is a device for turning compute-bound problems into I/O bound problems." -- Ken Batcher (Goodyear Aerospace)
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