You r right... I have to tell you what I have done...
I did not define a "stand-alone" benchmark like the "Manners" one. I benchmarked a real j2ee application. I have got jrules deployed with a resource adapter and drools deployed with simple jars libraries plus jbrms. Jrules uses a "bres" module which does the same trick jbrms does. Both of them are deployed on the same AS, in the same time, same machine (my laptop: dual core 2 duo 1.66, 2GB). Using the inversion of control pattern I found out how to "switch the rule engine" at run-time. So I can easily choose then rule engine to use between drools and jrules. Ofcourse thay have got two separate rule repositories but both of them persist the rules on the same DB which is Derby. The j2ee application I benchmarked sends a request object to the current rule engine and get back a reply from it. I just measured the elapsed time between the request and reply generation using drools first and the jrules. I did the measurements tens of times. Both rule engines implement the same rules and the Drools rules (which I personally implemented) are at least as optimized as the jrules ones. In the Jrules version of the rules there are a lot of "Eval(...)" blocks in the Drools version I did not use the "Eval()" at all ....but I just did pattern matching. If you want i can send you a more specific documentation but I hope this explanation will be enough to show you that the measurements I have done are not that bad. In any case I noticed that after a warming-up phase, the drools engine gives a reply back 3 times slower than the jrules engine. The link I have sent show you something related to it, It reports the manners execution time using drools and jrules. As you can see the difference is a 1,5x factor....so I was wrong... drools is not that slow. In anycase seems to be slower that jrules. Look at this: http://blogs.ilog.com/brms/wp-content/uploads/2007/10/jrules-perf-manners.png Massimiliano On 5/15/08, Edson Tirelli <[EMAIL PROTECTED]> wrote: > The old recurring performance evaluation question... :) > > You know that an explanation can only be made after having looked at the > tests used in the benchmark, the actual rules used by both products, > hardware specs, etc... so, not quite sure what answer do you want? > > For instance, there are a lot of people that think exactly the contrary. > Just one example: > http://blog.athico.com/2007/08/drools-vs-jrules-performance-and-future.html > > My preferred answer is still: > > "In 99% of the applications, the bottleneck is IO: databases, network, etc. > So, test your use case with both products, make sure it performs well > enough, add to your analysis the products feature set, expressiveness power, > product flexibility, cost, professionals availability, support quality, etc, > and choose the one that best fits you." > > That is because I'm sure, whatever your rules are, in whatever product > you try them, they can be further optimized by having a product expert > looking into them. But what is the point? > > Cheers, > Edson > > > > 2008/5/14 mmquelo massi <[EMAIL PROTECTED]>: > >> >> Hi everybody, >> >> I did a benchmark on Drools\Jrules. >> >> I found out that drools is about 2,5-3 times slower than Jrules. >> >> How comes? >> >> The results I got are quite similar to the ones in: >> >> >> http://images.google.com/imgres?imgurl=http://blogs.ilog.com/brms/wp-content/uploads/2007/10/jrules-perf-manners.png&imgrefurl=http://blogs.ilog.com/brms/category/jrules/&h=516&w=722&sz=19&hl=it&start=1&um=1&tbnid=YBqwC0nwaSLxwM:&tbnh=100&tbnw=140&prev=/images%3Fq%3Dbrms%2Bbencmark%26um%3D1%26hl%3Dit >> >> Any explanations? >> >> Thank you. >> >> Bye >> >> Massi >> >> _______________________________________________ >> rules-users mailing list >> [email protected] >> https://lists.jboss.org/mailman/listinfo/rules-users >> >> > > > -- > Edson Tirelli > JBoss Drools Core Development > Office: +55 11 3529-6000 > Mobile: +55 11 9287-5646 > JBoss, a division of Red Hat @ www.jboss.com > _______________________________________________ rules-users mailing list [email protected] https://lists.jboss.org/mailman/listinfo/rules-users
