[rules-users] high cpu usage

[techy]

Hello
My app is functioning consumer/producer model.
1.Producer reads the data from DB and inserts to blocking queue
2.Consumer reads the data from queue and execute the rules using drools
stateless session.
Both producer and consumer run asynchronously. 

in my testing I found the following

1. for 1000 facts at a time and no rules in drl, cpu usage is maintained at
25-30% in my PC(Intel core 2 CPU,2.13 GH,2G RAM)  - with no rules in drl, Is
this cpu usage  acceptable?
2. for 1000 facts at a time and ~60 rules in drl, cpu usage is maintained at
50-60% on the same PC.
3. If I have 1 sec wait between each execution of rules in consumer, then
cpu usage is maintained < 5%

high CPU usage is being big concern to me. Is this expected while using
drools? Do others see same cpu usage too?  Please share your thoughts.
appreciate your input.

Thanks

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