RE: Partition Properties-Maximum Numbers (Opinion Needed)

["Bakutis, Becky" <BBakutis@xxxxxxxxxxxxxxxxxxxx>]

Thanks for the opinions.  I thought setting the maximums so high would prevent a future outage.  I have a P5 (570), P6 (MMA) & P7 (MMD).  I will look into processor pools.

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Jim Oberholtzer
Sent: Wednesday, March 27, 2013 10:21 AM
To: Midrange Systems Technical Discussion
Subject: Re: Partition Properties-Maximum Numbers (Opinion Needed)

Becky,

I will frequently do as your business partner did.  Reason is if you do 
decide to use more memory/processor that you expected to then you do not 
have to change the high end limits and deactivate (shut down entirely) 
and reactivate it in order to reset the high limits.  Usually that's the 
default when the customer does not have a very good idea or desire about 
where the limits should be set.

The rational for the method you use is to be sure a specific partition 
does not get past licensing limits, or other constraints; or worse case 
scenario, run away with all the processing resources.  Be aware though 
that the minimums are important too.  Another partition cannot use 
processor capability that pushes a partition below it's minimums.

You don't mention what hardware your on but a method to control it in a 
different way is to use processor pools.  You can set them up and run 
specific partitions in specific pools and limit your usage that way too.

Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects


On 3/27/2013 12:05 PM, Bakutis, Becky wrote:
> I am using uncapped processors.  Typically I set the maximum for both processing units and virtual processors to the maximum a specific partition will ever use.  My Business Partner set up a system with the maximum for both processing units and virtual processors as the total processors on the entire frame.  Is one way better than the other?  Does it matter what the Maximum number is as long as it is greater than the Assigned number?
>
> For example this system has 20 processors for the entire frame:
>
> SYSTEM A:
>
> Processing Units
> Minimum: 0.5
> Assigned: 5.0
> Maximum: 20.0
>
> Virtual Processors
> Minimum: 1.0
> Assigned: 6.0
> Maximum: 20.0
>
> It seems my Business Partner does the same thing with memory.  Making the maximum number for each partition the maximum for the entire frame:
>
> SYSTEM A:
>
> Dedicated: 10GB
> Assigned: 100GB
> Maximum: 400GB
>
> Becky Bakutis
> Systems Engineer
> Republic Services
>
> 480.627.2760 (w)
> bbakutis@xxxxxxxxxxxxxxxxxxxx
>
> --