Re: 2.4.20: Proccess stuck in __lock_page ...

Marcelo Tosatti
2003-05-27T17:36:11Z

On Tue, 27 May 2003, Marc-Christian Petersen wrote:

> On Tuesday 27 May 2003 19:27, Marcelo Tosatti wrote:
>
> Hi Marcelo,
>
> > > 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 ?
> A pause is _not_ perfectly fine, even not to some extent. That pause we are
> discussing about is a pause of the _whole_ machine, not just disk i/o pauses.
> Mouse stops, keyboard stops, everything stops, who knows wtf.

Do you also notice them?

> That behaviour is absolutely bullshit for desktop users. For serverusage you
> may not notice it in this dimension (mostly no X so no mouse), but also for a
> server environment this may be very bad.

Agreed.