linux-kernel - Re: 50 Watt idle power regression bisected to Linux-3.10

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Date:	Wed, 11 Dec 2013 23:57:36 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Mike Galbraith <bitbucket@...ine.de>
CC:	Borislav Petkov <bp@...en8.de>, Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Len Brown <lenb@...nel.org>,
	Linux PM list <linux-pm@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Jeremy Eder <jeder@...hat.com>, x86@...nel.org
Subject: Re: 50 Watt idle power regression bisected to Linux-3.10

I'm guessing there is an implicit or explicit wake-up somewhere that I managed to miss.  If it is implicit it could be hard to catch.

Mike Galbraith <bitbucket@...ine.de> wrote:
>On Thu, 2013-12-12 at 06:57 +0100, Mike Galbraith wrote: 
>> On Wed, 2013-12-11 at 21:45 -0800, H. Peter Anvin wrote: 
>> > As in it hangs at that point?
>> 
>> Nope, it's still going.
>> 
>> [1567.578340] pcc-cpufreq: (v1.10.00) driver loaded with frequency
>limits: 1064 MHz, 2266 MHz
>> 
>> Funny, continents move faster :)  Maybe missing a write or two.
>
>When I get back it may be done booting.  I'm gonna let it try for grins
>while I'm away, then take a peek, see if I can spot it.
>
>[ 1567.578340] pcc-cpufreq: (v1.10.00) driver loaded with frequency
>limits: 1064 MHz, 2266 MHz
>                                                                   done
>Starting HAL daemon                                                  
>done
>
>
>Setting up (localfs) network interfaces:
>    lo        
>    lo        IP address: 127.0.0.1/8   
>           IP address: 127.0.0.2/8                                 done
>    eth0      device: Broadcom Corporation NetXtreme II BCM5709 Gig
>         No configuration found for eth0                         unused
>    eth1      device: Broadcom Corporation NetXtreme II BCM5709 Gig
>         No configuration found for eth1                         unused
>    eth2      device: NetXen Incorporated NX3031 Multifunction 1/10
>[ 2457.114007] IPv6: ADDRCONF(NETDEV_UP): eth2: link is not ready
>[ 2457.114455] netxen_nic: eth2 NIC Link is up
>[ 2457.223582] IPv6: ADDRCONF(NETDEV_CHANGE): eth2: link becomes ready
>    eth2      IP address: 0.0.0.0/32

-- 
Sent from my mobile phone.  Please pardon brevity and lack of formatting.
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