Re: AIX - ESS - kernalized I/O?

On Tue, 23 Apr 2002 17:11:06 +0200, Falco <f.paul_at_cigma.nl> wrote:

>Hi everybody.
>
>I learned from one particular source that AIX accesses files on our IBM ESS as
>raw devices.
>Therefore, AIX would be using kernalized asynchronous I/O (AIO) on these
>volumes.
>Because of this, the AIO minservers and AIO maxservers would not play a role
>in the performance
>of the I/O subsystem (at least not with regards to these ESS devices).
>
>Unfortunally, I couldn't find any further information on this subject. What I
>would really like to
>know if somebody can confirm this. As we are now using 150 (!) AIO servers
>(each eating
>9MB of memory) on a particular node, we are currently wasting 1.3GB of memory.
>It would be really nice if this memory can be released back to the system.
>
>Regards,
>
>Falco Paul
>Shell DBA services

Please read the AIX specific manuals on http://technet.oracle.com They definitely discuss the AIO issue.

Regards

Sybrand Bakker, Senior Oracle DBA

To reply remove -verwijderdit from my e-mail address Received on Tue Apr 23 2002 - 10:37:19 CDT