[rules-users] Insert Fact Performance slow with FactType vs Java Pojo

[Saurabh]

Hi,
    
       more detailed Fact problem 
     
ENVIRONMENT:
My system generates a Txn class on startup based on db config (along with
rules).
Then it starts reading the database table, creating instances of this Txn
class.
These instances are inserted into the working memory, and fireAllRules
called for each insertion.
The number of these instances in memory will grow beyond one million.
Drools Version is 5.1.1.

OPTION 1:
Txn is generated as a declared class in DRL and FactType is used to create
and insert instances.
I get this to run at 75 TPS which starts slowing down as the number of Txns
in working memory grows.
This is too slow for my needs.

OPTION 2:
I created the Txn as a Java class and used normal new() to create instances
and insert into the working memory.
This runs at 1000 TPS steadily all the way to 1.4 millions Txns in memory.

THIS IS ODD, NEED HELP !
Any ideas ? Option 1 is what we need as the Txn fields change in each run
configuration.
Both options work correctly insofar as rule firing is concerned.
Does not appear to be 'reflection' as it gets worse as the number of
instances of Txn in working memory increases.
 
Regards
Saurabh 

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