[rules-users] Server Sizing for Flow and Expert

[Michael Rhoden]

You won't need much horsepower. If anything I would go 64 bit and put  
6-8 gigs of ram in the box. CPU won't matter much.

We run 10k rules on an old dual core, but the rulebase takes 2.5 gigs  
of ram.

-Michael

On Dec 14, 2009, at 10:11 AM, Bruce Campbell  
<CampbellBD at ldschurch.org> wrote:

> I will be starting a new project soon and my middleware folks need  
> to size a server for it.  Does anyone have any input as to how they  
> (middleware) can adjust their usual sizing exercise to account for  
> the use of Flow and Expert?  Here are some "facts" that may or may  
> not be relevant...
> We do not have any significant experience with Flow nor Expert
> We will be using the "current" release of Drools as of January 4th  
> 2010
> Websphere in the middle, Oracle in the back
> Our main Expert routine will run every 10 minutes and
>  will determine which of our 10-ish "flows" the work items will travel
>  may contain 500 - 1000 rules (guestimated by a noob)...
>  will process the rules once-through for each item in the batch  
> (little or no rule interactions)
>  a batch would typically contain 10- 100 items to process..
>  but could contain up to 300 after a severe outage.
>  batch size could be controlled if necessary.
>  and will likely run on the same server as the "Flow" application...
> Our internal web application will be primarily Flow driven with...
>    50-ish user, 35 concurrent
>    10 "flows" with simple to moderate complexity from a processing  
> perspective, mainly human tasks. (much of the time someone will  
> check a few boxes, add some comments, and the work item will flow to  
> the next step/person.)
> I'm hopeful someone can pipe in with how Flow and Expert change the  
> typical sizing exercise, however, I appreciate any input you may  
> have whether related to sizing or not..
> thanks in advance
> Bruce
>
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