kern/91023: cpufreq/p4tcc: sysctl: dev.cpu.0.freq: Device busy

Christian Wittenhorst wiwi at
Wed Dec 28 08:50:15 PST 2005

>Number:         91023
>Category:       kern
>Synopsis:       cpufreq/p4tcc: sysctl: dev.cpu.0.freq: Device busy
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Dec 28 16:50:03 GMT 2005
>Originator:     Christian Wittenhorst
>Release:        6.0p1
progon network engineering
FreeBSD 6.0-RELEASE-p1 FreeBSD 6.0-RELEASE-p1 #5: Thu Dec 22 20:54:54 CET 2005     root at  i386
> Dec 28 17:32:54 mirror kernel: p4tcc0: 
>   <CPU Frequency Thermal Control> on cpu0

> dev.cpu.0.freq: 2999
> dev.cpu.0.freq_levels: 2999/-1 2624/-1 2249/-1 
>   1874/-1 1499/-1 1124/-1 749/-1 374/-1              

mirror# sysctl dev.cpu.0.freq=2624
dev.cpu.0.freq: 2999
sysctl: dev.cpu.0.freq: Device busy

Happens on several servers (same hardware type). The hardware is HP/Compaq DC7100 series...
(see description)              

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