Re: 2.6.23.8-rt11, tasks freezing

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On Wed, 21 Nov 2007, Juuso Alasuutari wrote:
 
> Hi,
> 
> I use vanilla kernels with realtime-preempt patches on a Core 2 E6600
running
> 32-bit Linux. Kernels up to 2.6.22.1-rt9 work fine, but I'm
experiencing
> strange freezing of some tasks with 2.6.23.8-rt11. (Actually all
2.6.23
> rt-kernels I've so far tried hang the same way.)
> 
> The system boots up nicely and seems to be running properly, until
something
> tips it off and some commands begin to get "jammed". What seems to
trigger it
> is accessing the hard disk, for instance doing something like `grep -r
> foo /var`. When it happens the desktop seems mostly responsive, but
trying to
> run commands like `ls` will freeze the terminal. Other commands will
succeed,
> for instance `ps aux` works as usual.
> 
> Alt-SysRq-w shows more than one blocked pdflush task, as well as
metalog and
> whatever commands have become "jammed" so far, like `ls`.
> 
> I'll be happy to post more information, I just need to know what. I'd
attach
> my .config here, but I can't access the computer from where I'm at the
> moment.
 

Hi,
 
I think I am experiencing the same symptoms using 2.6.23.9-rt12 on a
Core 2 T7400 running 32 bits Linux (National Instrument PXI 8106
controller).
The .config used is the untouched default configuration as provided in
the 2.6.23.9-rt12 kernel sources.
Has there been any solution/workaround found on this subject since the
last message in this thread?

Thank you,

Florent Boudet

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