[LAD] Kernel Opinions: .31-rt or .33-rt?

[Ralf Mardorf]

James Warden wrote:
> --- On Thu, 4/29/10, torbenh <torbenh at gmx.de> wrote:
>
>   
>> From: torbenh <torbenh at gmx.de>
>> Subject: Re: [LAD] Kernel Opinions: .31-rt or .33-rt?
>> To: linux-audio-dev at lists.linuxaudio.org
>> Date: Thursday, April 29, 2010, 3:41 PM
>> On Thu, Apr 29, 2010 at 09:23:37PM
>> +0200, Ralf Mardorf wrote:
>>     
>>> Gabriel M. Beddingfield wrote:
>>>       
>>>> On Thu, 29 Apr 2010, Ralf Mardorf wrote:
>>>>
>>>>         
>>>>> using, might have an advantage regarding to
>>>>>           
>> heat. I keep my
>>     
>>>>> fingers crossed that less activity for you
>>>>>           
>> fan, won't shutdown
>>     
>>>>> your laptop, when doing audio work.
>>>>>           
>>>> Well, I've used it for several kernel builds with
>>>>         
>> -j2. Gets hot,
>>     
>>>> but hasn't overheated... so I think I'm good. :-)
>>>>
>>>> -gabriel
>>>>         
>>> This is a good test :), when I do build a kernel the
>>>       
>> CPU is working
>>     
>>> to capacity for around 1 hour, when set to
>>> MAKEFLAGS="CONCURRENCY-LEVEL=2", quasi -j2. I guess
>>>       
>> your mileage
>>     
>>> won't vary too much, so several kernel builds should
>>>       
>> be harder than
>>     
>>> audio work.
>>>       
>> 1 hour ... with both cores ? 
>> thats why i dont use these weird kernel buildsystems.
>>
>> i build a kernel in 10minutes on one core.
>> simply because i turn the stuff i dont need off...
>>
>> but this time i missed some important option and it took
>> pretty long to
>> get the new kernel working...
>>
>> for the record: 
>> this was the solution.
>> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/571164
>>
>>     
>
>
>
> I tried 2.6.33.x-rty with a config from 2.6.32. Did the usual make-kpkg thing with the env variable CONCURRENCY_LEVEL=2 set prior to make-kpkg (dual core system). It built fine in a reasonable time (my kernel config is home-made, a lot of stuff is not checked in).
>
> But when booting, I got a kernel panic (first time in years!). So back to vanilla 2.6.32 which works great for me even for RT (see xruns only when unstable apps are sometimes crashing - I use jack2 by the way).
>
> J.
>   

Some days ago I saw my first kernel panic ever and this happened because 
the hardware for the computer from a friend needs to be repaired. After 
I repaired his hardware there wasn't the kernel panic any more. 
Regarding to Torben's and your experiences it won't make any sense to 
build .33-rt.

Anyway, I'll try to do it tomorrow.

Ralf