linux-kernel - Re: sata io freeze, 2.6.18 and also 2.6.24 [the real culprit]

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Date:	Mon, 14 Apr 2008 07:14:22 -0300 (ART)
From:	Luis Sousa <ls.luis_sousa@...oo.com.br>
To:	devzero@....de
Cc:	linux-kernel@...r.kernel.org
Subject: Re: sata io freeze, 2.6.18 and also 2.6.24 [the real culprit]

Hello,

I did as planned, and I dare to say now, with
relative certainty, that the reason I have had all
these instabilities, including application crashes,
sneaky corrupt backups, and the dreaded freezes
every other day was SMP and HyperThreading not working
properly. Booting with nosmp gives me a stable system.
Booting only with the sata-related arguments had
the system freeze overnight.

Sincerely,
--
Luis Sousa

--- devzero@....de escreveu:

> hi luis, 
> 
> glad that it worked - but let us better call this a possible workaround, not a solution.
> 
> mind that you loose lots of performance with this, because all i/o is handled by the cpu
> now.
> 
> > If everything goes well, I'll reduce the command line
> > in order to narrow the problem further down.
> 
> yes, please!
> 
> regards
> roland
> 
> 
> > -----Ursprüngliche Nachricht-----
> > Von: "Luis Sousa" <ls.luis_sousa@...oo.com.br>
> > Gesendet: 12.04.08 17:34:39
> > An: devzero@....de
> > CC: linux-kernel@...r.kernel.org
> > Betreff: Re: sata io freeze, 2.6.18 and also 2.6.24 [POSSIBLE SOLUTION]
> 
> 
> > 
> > Hello all,
> > 
> > Thanks to valuable help from roland, I was able to
> > boot with the following options:
> > 
> > ``nosmp ide=nodma libata.dma=0''
> > 
> > after what I ran an agressive stability test for a
> > while, with no problem whatsoever. Maybe it's too
> > soon to say, but I have a good feeling this time. It
> > seems roland figured it out.
> > 
> > If everything goes well, I'll reduce the command line
> > in order to narrow the problem further down.
> > 
> > (and indeed, this is a hyper-threading single core CPU)
> > 
> > Sincerely,
> > --
> > Luis Sousa
> > 
> > --- devzero@....de escreveu:
> > 
> > > did you try UP-kernel or tried booting with "nosmp" and does that make any difference
> ?
> > > 
> > > >This is a 2-processor CPU:
> > > ># cat /proc/cpuinfo 
> > > >processor       : 0
> > > >vendor_id       : GenuineIntel
> > > >cpu family      : 15
> > > >model           : 4
> > > >model name      : Intel(R) Pentium(R) 4 CPU 3.00GHz
> > > 
> > > most likely this just "appears" as 2-way processor , but i´m quite sure this is just
> a
> > > single-core CPU, but with HyperThreading enabled.
> > > 
> > > 
> > > regards
> > > roland
> > > 
> > > 
> > > 
> > > List:       linux-kernel
> > > Subject:    sata io freeze, 2.6.18 and also 2.6.24
> > > From:       Luis Sousa <ls.luis_sousa () yahoo ! com ! br>
> > > Date:       2008-03-28 22:24:48
> > > Message-ID: 739784.81690.qm () web46009 ! mail ! sp1 ! yahoo ! com
> > > [Download message RAW]
> > > 
> > > Hello,
> > > 
> > > I've been having consistent hard system freezes for a
> > > long time, every 2 days or so, and finally decided to
> > > move to the most recent stable kernel. Unfortunatelly
> > > that didn't fix it. The freezes seem to be io-related;
> > > they started since I moved my drive to sata. They seem
> > > to happen mostly when there's an io-intensive operation,
> > > like extracting a big archive; a reboot is needed.
> > > 
> > > Nothing ever shows up in the logs.
> > > 
> > > I'm using the following drive:
> > > 
> > > ATA device, with non-removable media
> > >         Model Number:       MAXTOR STM3160215AS                     
> > >         Serial Number:      6RA2TMJ4
> > >         Firmware Revision:  3.AAD   
> > > 
> > > Linux localhost 2.6.24.4 #4 SMP Fri Mar 28 14:51:50 BRT 2008 i686 GNU/Linux
> > > 
> > > This is a 2-processor CPU:
> > > 
> > > # cat /proc/cpuinfo 
> > > processor       : 0
> > > vendor_id       : GenuineIntel
> > > cpu family      : 15
> > > model           : 4
> > > model name      : Intel(R) Pentium(R) 4 CPU 3.00GHz
> > > stepping        : 9
> > > cpu MHz         : 3013.697
> > > cache size      : 1024 KB
> > > 
> > > (same goes for processor : 1)
> > > 
> > > Sincerely,
> > > --
> > > Luis Sousa



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