SUMMARY: Solaris 8 and processor bindings

Bernd Schemmer wrote:

Hi

I got one reply for this query from Lucien HERCAUD

>> Hello,
>>
>>I would create only ONE processor set and bind Oracle to it. 
>>This way => let the application AND the rest of the processes in the system go to the DEFAULT processor set.


So I assume it should work the way I'm going to implement it. I'll keep 
Lucien hint in mind in case there are any errors with my implementation.

regards

Bernd

> Hi,
>
> a project running Solaris 8 on a E2900 wants to implement CPU bindings 
> for their processes.
>
> The project runs an Oracle database and an application on that 
> machine. Half of the CPUs should be used for the Oracle DB and the 
> others for the application. psrinfo gives the following output:
>
> 0       on-line   since 12/12/05 16:15:06
> 1       on-line   since 12/12/05 16:15:16
> 2       on-line   since 12/12/05 16:15:16
> 3       on-line   since 12/12/05 16:15:16
> 8       on-line   since 12/12/05 16:15:16
> 9       on-line   since 12/12/05 16:15:16
> 10      on-line   since 12/12/05 16:15:16
> 11      on-line   since 12/12/05 16:15:16
> 512     on-line   since 12/12/05 16:15:16
> 513     on-line   since 12/12/05 16:15:16
> 514     on-line   since 12/12/05 16:15:16
> 515     on-line   since 12/12/05 16:15:16
> 520     on-line   since 12/12/05 16:15:16
> 521     on-line   since 12/12/05 16:15:16
> 522     on-line   since 12/12/05 16:15:16
> 523     on-line   since 12/12/05 16:15:16
>
> AFAIK this can be done with prset without using the Resource Manager.
>
> At this time I' m planning to implement it this way:
>
> - create an init script to create the two processor sets
>
> - bind the startup script for Oracle to one of the processor sets 
> (this should be done in the startup script  for Oracle)
>
> - bind the startup script for the application to the other processor 
> set (this should be done in the startup scrpit for the application)
>
> Again AFAIK, binding the startup script to a processor set should be 
> enough to bind all processes started by the startup script also to the 
> processor set. Right?
>
>
> But I have some questions about how to implement this:
>
> Is there any additional documentation about doing this apart from the 
> man page and docs.sun.com?
>
> Are there any pitfalls that I've to be aware of?
>
> What about Interrupt handling? Should I disable interrupts for the 
> processor sets?
>
> Can/Should  I use all existing CPUs for the processor sets?
>
> Any hints about which CPUs I should use for the processor sets?
>
> Do I need to install extra patches (in addition to the recommended 
> patchset) to get it working?
>
>
> regards
>
> Bernd
>
>
>
>


-- 
Bernd Schemmer, Frankfurt am Main, Germany
http://home.arcor.de/bnsmb/index.html

Mas temprano que tarde el mundio cambiara
                        Fidel Castro
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