[rules-users] Upgrade to Drools 5 - loss of performance

[Ingomar Otter]

During a few experiments I did with MVEL, I have found that 2.x  
actually performs slower than 1.x in our case. Maybe that is a  
starting point.

Scott, do you have the possibility to profile your application   using  
4.x and   using 5.x? That should reveal the bottlenecks and I am sure  
that the dev crowd would be glad receiving that input.

  -- Ingomar


Am 28.05.2009 um 17:18 schrieb Scott Reed:

> I just upgraded our app from Drools 4 to 5 libraries. We just use  
> the rules engine with DRL. The performance of the engine on our  
> rulebase is unacceptably slow.  I assume there is something we need  
> to do to our rules or the way we are configuring the engine to fix  
> this. I don't see anything in the release notes about backwards  
> compatibility issues. I would very much appreciate it if someone  
> would direct me to any documentation that explains what needs to be  
> done so our 4.0 rules perform at least as well as they did before  
> the upgrade?
> Thanks,
> Scott
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