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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I can only add one thing to the answer. I don’t have
performance metrics available, though I did some Q&D tests with 15000 rules
and the speeds I got for the kind of processing I did (1-3 seconds) were really
good.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The downside was the Permgen memory space usage which was pretty
high and we are still grappling with that problem. Mark had suggested that I
use MVEL instead of the Java Dialect(which we could not do due to a time
constraint) to reduce this usage besides we are now migrating to Drools 5 where
we hope this has improved. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The performance will very well depend on how you design the
rules(single rulebase, multiple rulebase) etc<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Cheers,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Vikrant <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
rules-users-bounces@lists.jboss.org
[mailto:rules-users-bounces@lists.jboss.org] <b>On Behalf Of </b>Ashish Soni<br>
<b>Sent:</b> Thursday, February 12, 2009 9:37 PM<br>
<b>To:</b> Rules Users List<br>
<b>Subject:</b> Re: [rules-users] Drools Performance<o:p></o:p></span></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'>Any more response will be
appreciated as i am in the final phase of drools evaluation and need this
urgently.<br>
<br>
regards,<br>
Ashish<o:p></o:p></p>
<div>
<p class=MsoNormal>On Wed, Feb 11, 2009 at 3:21 PM, Steve Núñez <<a
href="mailto:steve.nunez@illation.com.au">steve.nunez@illation.com.au</a>> wrote:<o:p></o:p></p>
<div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>Ashish,<br>
<br>
There are a lot of variables involved in performance benchmarking. Your
scenario is common in many industries, such as insurance, that utilise large
decision tables.<br>
<br>
We have previously published benchmarks comparing various rules engines at <a
href="http://illation.com.au/benchmarks" target="_blank">http://illation.com.au/benchmarks</a>,
however they don't specifically address the use case of large rulesets, but
instead stress various aspects of the rules engines.<br>
<br>
We are working to put together a new set of benchmarks that will better test
typical use cases, and we'd welcome your comments and participation. We are
very early in this process, and should have a publically available 'blog to
discuss the topic.<br>
<br>
Regards,<br>
- Steve Nunez<o:p></o:p></span></p>
<div>
<div>
<p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:11.0pt;
font-family:"Calibri","sans-serif"'><br>
<br>
<br>
On 11/02/09 11:37 AM, "Ashish Soni" <<a
href="http://learnspring@gmail.com" target="_blank">learnspring@gmail.com</a>>
wrote:<o:p></o:p></span></p>
</div>
</div>
<div>
<div>
<blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>Hi
All , <br>
<br>
I am not sure if this question is asked previously but it would be great if any
one can put some lights on this ..<br>
<br>
If i have 10,000 rules with same priority or equal priority then how drools
engine evaluate them or what is the path it chooses.<br>
<br>
Also if there any performance metrics available ,please point to the links.<br>
<br>
<br>
Thanks and Regards,<br>
Ashish soni</span><o:p></o:p></p>
</blockquote>
</div>
</div>
</div>
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