linux-kernel - Re: [ANNOUNCE] 3.12.8-rt11

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Date:	Mon, 27 Jan 2014 13:42:29 +0400
From:	Pavel Vasilyev <pavel@...linux.ru>
To:	Sebastian Andrzej Siewior <bigeasy@...utronix.de>
CC:	linux-rt-users <linux-rt-users@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>, rostedt@...dmis.org,
	John Kacur <jkacur@...hat.com>
Subject: Re: [ANNOUNCE] 3.12.8-rt11

27.01.2014 12:44, Sebastian Andrzej Siewior пишет:
> On 01/26/2014 10:25 PM, Pavel Vasilyev wrote:
>> 25.01.2014 17:45, Sebastian Andrzej Siewior пишет:
>>> Dear RT folks!
>>
>>
>> Gentlemen, let's have a month of stress testing! Divide tasks
>> testing subsystem: USB, NET, MM, ACPI, AUDIO, VIDEO By CPUs:
>> ARM/PPC/X86/X86_64...
>>
>> Purely on observations noted that in September 2013, the quality
>> and stability of the code has deteriorated dramatically.
> 
> By September 2k13, do you mean a specific v3.10-RT release?
> 

Any after 3.2.x-rt

Maybe I'm doing something wrong, but:

1) All kernels (3.2, 3.8, 3.12, 3.13,...) are working normally without patches;

2) 3.2 works fine in CONFIG_PREEMPT_RT_BASE or CONFIG_PREEMPT_RT_FULL modes;

3) 3.10 not works at all, even without -RT patches;

4) 3.12 work only as CONFIG_PREEMPT_RT_BASE or CONFIG_PREEMPT_RT_FULL in
uniprocessor mode (maxcpus=0, nosmp).  Newer patches (Oct.-Dec.) did not work,
even in RT_BASE mode.

Varia hardware: One Opteron 285, 2-cpus (4 cores). Six Intel Atoms devices
kernels compiled as x86_32.

I have my patches, but I tested both with them and without them.
---

Behold! 3.12.8-rt11, RT_FULL mode, kernel cmdline: init=/bin/bash

1.
bash: cannot set terminal process group (-1): Inappropriate ioctl for device
bash: no job control in this shell

2.
in single mode: After 2 minutes timeout: see screenshot
http://i59.fastpic.ru/big/2014/0127/bc/0f9e04536181286f820ecaae5a8481bc.jpg

3.
command killall -15 freezed system!

Kernel compiled with debug information starts to work normally, but of course
slower. :D

-- 

                                                         Pavel.

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