Re: 2.4.20: Proccess stuck in __lock_page ...

[manish (manish@storadinc.com)]

Carl-Daniel Hailfinger wrote:

> Marcelo Tosatti wrote:
>
> > On Tue, 27 May 2003, Carl-Daniel Hailfinger wrote:
> >
> > > Marcelo Tosatti wrote:
> > >
> > > > On Mon, 26 May 2003, manish wrote:
> > > >
> > > > > All the bonnie process and any other process (like df, ps -ef etc.) are
> > > > > hung in __lock_page. Breaking into kdb, I observe the following for one
> > > Following is SysRq-T output for stuck processes during such a pause from
> > > Christian Klose. Only processes in D state are listed for brevity.
> > > Especially the last two call traces are interesting.
> > A "pause" is perfectly fine (to some extent, of course), now a hang is
> > not. Is this backtrace from a hanged, unusable kernel or ?
>
> AFAIK, the kernel is not unusable, but a 20 second pause with no disk
> access at all is not nice either.
>
>
> Regards,
> Carl-Daniel
Hello !

It is not a system hang but the processes hang showing the same stack 
trace. This is certainly not a pause since the bonnie processes that 
were hung (or deadlocked) never completed after several hrs. The stack 
trace  was the same.

Thanks
Manish




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