Hi !

If you can't use directio..are you using the reiserfs-mountoption "notail" ?
That's the reason for the hanging processes with direct-io....

Bye
 Frank

-----Ursprüngliche Nachricht-----
Von: Andrew Edunov [mailto:and@(protected)]
Gesendet: Donnerstag, 16. November 2006 15:32
An: 'Kostya Alexandrov'; 'Fabrizio Magni'
Cc: suse-oracle@(protected)
Betreff: RE: [suse-oracle] CPU utilization on system level

Thanks for advice.....

I have some problem with direct io, oracle hangs after turn this parameter
on.
It's no possible to move to x86_64 because of hardware(IBM x365).


> Dear, Anrew,
>
> I think, so problems possible for 20 connections/minute.
> each dedicated connection is fork(), so sys time cpu utilization
> possible, but I think so not so much.
> Also, possible that problems in linux cache, i'm strongly recommend you
> to setup support of direct IO.
> And if you really want to use all of 32G of ram, setup x86_64 version of
> oracle and linux.



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