trinity-devel@lists.pearsoncomputing.net

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Month: March 2014

Re: [trinity-devel] BUG - tdepowersave Grabbing 97% of CPU - overheating laptop

From: "Timothy Pearson" <kb9vqf@...>
Date: Thu, 6 Mar 2014 12:29:37 -0600
> On 03/06/2014 10:52 AM, Dr. Nikolaus Klepp wrote:
>> Am Donnerstag, 6. März 2014 schrieb David C. Rankin:
>>> All,
>>>
>>>   Testing the new soft-freeze packages has disclosed a horrible problem
>>> with
>>> tdepowersave taking nearly 100% of the CPU. My laptop was nearly on
>>> fire this
>>> morning:
>>>
>>> [screenshot]
>>> http://www.3111skyline.com/dl/dt/trinity/ss/tdeowersave-97percent.jpg
>>>
>>>   Earlier in development I saw tdepowesave in the 20-40% range, but
>>> never at
>>> near 100% of CPU. What to try?
>>>
>>
>> What kernel do you use? I had the same problem on wheezy with 3.5.13.2.
>> tdepowersave took 100% of one core. It occured after tdepowersave put
>> the x61 to powersave the second time. It looks like the problem went
>> away after changing to kernel 3.12-0.bpo.1.
>>
>> nik
>>
>>
>
> Kernel is 3.13-5.1 (just a few days old), So this is happening with
> current kernels.
>
> --
> David C. Rankin, J.D.,P.E.

Try attaching gdb to the runaway tdepowersave process--that should at
least show you where it is stuck.

Tim