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Subject: Re: long stalls
From: Juergen Sawinski <juergen.sawinski@mpimf-heidelberg.mpg.de>
To: "linux-kernel@vger" <linux-kernel@vger.kernel.org>
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On Wed, 2003-01-08 at 02:51, Russell Leighton wrote:
> 
> I can't help, but I can echo a "me too".
> 
> We only see it when I have 2 file I/O intensive processes...they both 
> will just stop for some few seconds, system seems idle...then
> they just start again. RH7.3 SMP, Dual PIII, 4GB RAM, 3com RAID Controller .

Same thing here with a Promise SX6000 RAID controller (P4, 1GB RAM,
system is completely on RAID, 2.4.20-pre10-ac1). But, this seems not to
be related. At least in my case, it's the controller that causes the
stalls, 'cause only processes depending on file IO (including swap) get
into D state. Everything else just runs fine.

George

-- 
Juergen "George" Sawinski                  |  Phone:  +49-6221-486-308
Max-Planck Institute for Medical Research  |  Fax:    +49-6221-486-325
Dept. of Biomedical Optics                 |  Mobile: +49-171-532 5302
Jahnstr. 29                                |  
D-69120 Heidelberg                         |  
Germany                                    |  

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