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Message-Id: <200911081640.nA8GeUo5027858@www.freebsd.org>
Date: Sun, 8 Nov 2009 16:40:30 GMT
From: "Taner Ta&#351;" <3edcft654r5@gmail.com>
To: freebsd-gnats-submit@FreeBSD.org
Subject: Powerd freezes computer on Phenom II computer
X-Send-Pr-Version: www-3.1
X-GNATS-Notify:

>Number:         140391
>Category:       amd64
>Synopsis:       [hang] powerd(8) freezes computer on Phenom II computer
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    jh
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Nov 08 16:50:00 UTC 2009
>Closed-Date:    Sun Oct 10 07:49:27 UTC 2010
>Last-Modified:  Sun Oct 10 07:49:27 UTC 2010
>Originator:     Taner Ta&#351;
>Release:        8.0-RC2
>Organization:
>Environment:
FreeBSD pulsar 8.0-RC2 FreeBSD 8.0-RC2 #0: Sat Nov  7 23:42:53 EET 2009     root@pulsar:/usr/obj/usr/src/sys/PULSAR  amd64
>Description:
When I try to run powerd on amd64 machine, machine hangs after 10 seconds. Hard resetting can't enough to reboot computer, I have to switch off the electric cable for proper reboot.

Computer Specs:
AMD Phenom II 940 cpu
AMD 790GX chipset

# sysctl -a |grep cpu

kern.ccpu: 0
  <cpu count="4" mask="0xf">0, 1, 2, 3</cpu>
    <cpu count="4" mask="0xf">0, 1, 2, 3</cpu>
kern.smp.cpus: 4
kern.smp.maxcpus: 32
debug.cpufreq.verbose: 0
debug.cpufreq.lowest: 0
debug.kdb.stop_cpus: 1
hw.ncpu: 4
hw.acpi.cpu.cx_lowest: C1
machdep.hlt_cpus: 0
security.jail.param.cpuset.id: 0
dev.cpu.0.%desc: ACPI CPU
dev.cpu.0.%driver: cpu
dev.cpu.0.%location: handle=\_PR_.P001
dev.cpu.0.%pnpinfo: _HID=none _UID=0
dev.cpu.0.%parent: acpi0
dev.cpu.0.freq: 3000
dev.cpu.0.freq_levels: 3000/35100 2625/30712 2300/24375 2012/21328 1800/20930 1575/18313 1350/15697 1125/13081 900/10465 800/11400 700/9975 600/8550 500/7125 400/5700 300/4275 200/2850 100/1425
dev.cpu.0.cx_supported: C1/0
dev.cpu.0.cx_lowest: C1
dev.cpu.0.cx_usage: 100.00% last 500us
dev.cpu.1.%desc: ACPI CPU
dev.cpu.1.%driver: cpu
dev.cpu.1.%location: handle=\_PR_.P002
dev.cpu.1.%pnpinfo: _HID=none _UID=0
dev.cpu.1.%parent: acpi0
dev.cpu.1.cx_supported: C1/0
dev.cpu.1.cx_lowest: C1
dev.cpu.1.cx_usage: 100.00% last 500us
dev.cpu.2.%desc: ACPI CPU
dev.cpu.2.%driver: cpu
dev.cpu.2.%location: handle=\_PR_.P003
dev.cpu.2.%pnpinfo: _HID=none _UID=0
dev.cpu.2.%parent: acpi0
dev.cpu.2.cx_supported: C1/0
dev.cpu.2.cx_lowest: C1
dev.cpu.2.cx_usage: 100.00% last 500us
dev.cpu.3.%desc: ACPI CPU
dev.cpu.3.%driver: cpu
dev.cpu.3.%location: handle=\_PR_.P004
dev.cpu.3.%pnpinfo: _HID=none _UID=0
dev.cpu.3.%parent: acpi0
dev.cpu.3.cx_supported: C1/0
dev.cpu.3.cx_lowest: C1
dev.cpu.3.cx_usage: 100.00% last 500us
dev.acpi_perf.0.%parent: cpu0
dev.acpi_perf.1.%parent: cpu1
dev.acpi_perf.2.%parent: cpu2
dev.acpi_perf.3.%parent: cpu3
dev.acpi_throttle.0.%parent: cpu0
dev.cpufreq.0.%driver: cpufreq
dev.cpufreq.0.%parent: cpu0
dev.hwpstate.0.%parent: cpu
>How-To-Repeat:
/etc/rc.d/powerd onestart
>Fix:


>Release-Note:
>Audit-Trail:

From: Sven Gaerner <sgaerner@gmx.net>
To: bug-followup@FreeBSD.org
Cc:  
Subject: Re: amd64/140391: [hang] powerd(8) freezes computer on Phenom II
 computer
Date: Sun, 13 Dec 2009 10:56:04 +0100

 --MP_/_fB7N01Qf5qicxGh2IaGe.3
 Content-Type: text/plain; charset=US-ASCII
 Content-Transfer-Encoding: 7bit
 Content-Disposition: inline
 
 The same occurred on my computer with an Athlon II cpu, when using
 powerd in adaptive mode. If this is enabled, powerd reduces the
 frequency until the computer freezes. I tested this manually and the
 computer will freeze if the frequency is set below 300 MHz.
 
 I think there's a problem detecting the available frequencies that can
 be used by powerd.
 
 Attached the dmesg and a partial sysctl output.
 
 --MP_/_fB7N01Qf5qicxGh2IaGe.3
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From: g <annona2@gmail.com>
To: bug-followup@FreeBSD.org, 3edcft654r5@gmail.com
Cc:  
Subject: Re: amd64/140391: [hang] powerd(8) freezes computer on Phenom II 
	computer
Date: Wed, 3 Mar 2010 18:02:10 +0900

 I'm an author of hwpstate.c . sorry for inconvenience.
 A mixture of cpufreq with acpi_throttle and hwpstate will produce very
 low freq like 100MHz.
 
 So I think there are two workaround candidates.
 1) seting debug.cpufreq.lowest
  seeing sysctl dev.cpu.0.freq_levels output,
  do step by step setting the frequency as follows.
  sysctl dev.cpu.0.freq=XXXX
  sysctl dev.cpu.0.freq=XXXX
  sysctl dev.cpu.0.freq=XXXX
  sysctl dev.cpu.0.freq=YYY
  sysctl dev.cpu.0.freq=ZZZ
  and at the point ZZZ where the err 6 returned,set the threshold.
  sysctl debug.cpufreq.lowest=YYY
 2) disable acpi_throttle.
  disabling acpi_throttle maybe solve this problem.
  hint.acpi_throttle.0.disabled="1" in /boot/loader.conf
State-Changed-From-To: open->feedback 
State-Changed-By: jh 
State-Changed-When: Fri Sep 3 12:32:16 UTC 2010 
State-Changed-Why:  
Did you try the workarounds? Can you still reproduce this on 8.1 or later? 


Responsible-Changed-From-To: freebsd-amd64->jh 
Responsible-Changed-By: jh 
Responsible-Changed-When: Fri Sep 3 12:32:16 UTC 2010 
Responsible-Changed-Why:  
Track. 

http://www.freebsd.org/cgi/query-pr.cgi?pr=140391 
State-Changed-From-To: feedback->closed 
State-Changed-By: jh 
State-Changed-When: Sun Oct 10 07:49:26 UTC 2010 
State-Changed-Why:  
Feedback timeout. 

http://www.freebsd.org/cgi/query-pr.cgi?pr=140391 
>Unformatted:
