kern/140361: [cpufreq] speed-stepping broken on PhenomII (acpi?)

[Alexander Best]

The following reply was made to PR kern/140361; it has been noted by GNATS.

From: Alexander Best <alexbestms at wwu.de>
To: <bug-followup at FreeBSD.org>
Cc: Hannes <freebsd at soulrebel.in-berlin.de>
Subject: Re: kern/140361: [cpufreq] speed-stepping broken on PhenomII
 (acpi?)
Date: Thu, 25 Mar 2010 10:51:16 +0100 (CET)

 i don't think you're looking at the right sysctl values. you should be
 checking `sysctl dev.cpu.0.freq dev.cpu.0.freq_levels`.
 
 'dev.cpu.0.freq_levels' tells you what steppings are available and
 'dev.cpu.0.freq' which current stepping your cpu is using. also be sure you're
 running powerd (`/etc/rc.d/powerd onestart`).
 
 i'm not an expert on est though. `dmesg -a|egrep '^est[0-9]*'` reports:
 
 est0: <Enhanced SpeedStep Frequency Control> on cpu0
 est: CPU supports Enhanced Speedstep, but is not recognized.
 est: cpu_vendor GenuineIntel, msr 925092506000925
 est1: <Enhanced SpeedStep Frequency Control> on cpu1
 est: CPU supports Enhanced Speedstep, but is not recognized.
 est: cpu_vendor GenuineIntel, msr 925092506000925
 
 on my machine so i'm not sure how much powersaving is really being performed.
 your cpu might report the same.
 
 anyway it's probably better to send a message to stable at .
 
 -- 
 Alexander Best