Date: Wed, 25 Jul 2007 20:31:18 +0000 From: "V.I.Victor" <idmc_vivr@intgdev.com> To: "Garrett Cooper" <youshi10@u.washington.edu> Cc: freebsd-questions@freebsd.org Subject: Re: ACPI slowing CPU... or something else Message-ID: <W948422073655691185395478@webmail28>
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On Wed, 25 Jul 2007, Garrett Cooper wrote:
> V.I.Victor wrote:
>> I've two 5.4 desktop boxes. Pretty much the same installation; both
>> from the same CD, same apps, no monitor/keyboard, 1-user logged-on via
>> ssh (command-line only w/no gui) and otherwise lightly loaded.
>>
>> Box_A: CPU: AMD-K7(tm) Processor (598.84-MHz 686-class CPU)
>> avail memory = 121630720 (115 MB)
>> ACPI disabled by blacklist.
>>
>> Box_B: CPU: Intel(R) Pentium(R) 4 CPU 1.80GHz (1794.19-MHz 686-class CPU)
>> avail memory = 252186624 (240 MB)
>> cpu0: <ACPI CPU> on acpi0
>> acpi_throttle0: <ACPI CPU Throttling> on cpu0
>>...
> Yes. On my virtual machine with ACPI:
>
> dev.cpu.0.freq: 2653
> dev.cpu.0.freq_levels: 2653/-1 2321/-1 1989/-1 1658/-1 1326/-1 994/-1 663/-1
> 331/-1
>
> [root@optimus-vm-7 ~]# dmesg | grep 26
> FreeBSD 7.0-CURRENT #5: Tue Jul 17 08:22:26 UTC 2007
> CPU: Intel(R) Core(TM)2 CPU 6700 @ 2.66GHz (2666.79-MHz K8-class
> CPU)
> Timecounter "TSC" frequency 2666794890 Hz quality 800
>
> What are the following sysctls set to?
>
> kern.clockrate
> hw.acpi.cpu.cx_lowest
> dev.cpu.0.cx_lowest
> dev.cpu.0.cx_usage
Thanks for the reply! I don't seem to have the last 2 you've asked about.
'sysctl -a | egrep "clockrate|cpu"' reported the following:
kern.clockrate: { hz = 100, tick = 10000, profhz = 1024, stathz = 128 }
kern.threads.virtual_cpu: 1
kern.ccpu: 1948
kern.smp.maxcpus: 1
kern.smp.cpus: 1
hw.ncpu: 1
hw.clockrate: 1794
hw.acpi.cpu.cx_supported: C1/0
hw.acpi.cpu.cx_lowest: C1
hw.acpi.cpu.cx_usage: 100.00%
machdep.cpu_idle_hlt: 1
dev.cpu.0.%desc: ACPI CPU
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: 1796
dev.cpu.0.freq_levels: 1796/-1 1571/-1 1347/-1 1122/-1 898/-1 673/-1 449/-1 224/-1
dev.acpi_throttle.0.%parent: cpu0
dev.cpufreq.0.%driver: cpufreq
dev.cpufreq.0.%parent: cpu0
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