Would removing the eval() from your rule reduce memory usage?<br><br>Jevon<br><br><div class="gmail_quote">2011/4/26 Shebs, Liron <span dir="ltr"><<a href="mailto:liron.shebs@hp.com">liron.shebs@hp.com</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div bgcolor="white" background="?ui=2&ik=09a7800e7c&view=att&th=12f917c417d9182e&attid=0.0.1&disp=emb&zw" link="blue" vlink="purple" style="margin-left:37.5pt" lang="EN-US">
<img src="" style="width:0;min-height:0" height="0" width="0"><div><p class="MsoNormal"><span style="font-family:"Comic Sans MS";color:#9933FF">Hello All,</span></p><p class="MsoNormal"><span style="font-family:"Comic Sans MS";color:#9933FF"> </span></p>
<p class="MsoNormal"><span style="font-family:"Comic Sans MS";color:#9933FF">I’m working at HP Software R&D and we are considering using drools in our product.</span></p><p class="MsoNormal"><span style="font-family:"Comic Sans MS";color:#9933FF">Benchmarking tests showed that running 10,000 rules consumes 382mb. </span></p>
<p class="MsoNormal"><span style="font-family:"Comic Sans MS";color:#9933FF">This is too high for our system requirements, and we would like to know how we can improve it.</span></p><p class="MsoNormal"><span style="font-family:"Comic Sans MS";color:#9933FF">Technical details:</span></p>
<p><span style="font-family:"Comic Sans MS";color:#9933FF"><span>-<span style="font:7.0pt "Times New Roman""> </span></span></span><span dir="LTR"></span><span style="font-family:"Comic Sans MS";color:#9933FF">Drools version: 5.1 with default configuration. </span></p>
<p><span style="font-family:"Comic Sans MS";color:#9933FF"><span>-<span style="font:7.0pt "Times New Roman""> </span></span></span><span dir="LTR"></span><span style="font-family:"Comic Sans MS";color:#9933FF">All rules look like this:</span></p>
<p class="MsoNormal"><span style="font-family:"Comic Sans MS";color:#9933FF"> </span></p><p class="MsoNormal"><span style="font-family:"Comic Sans MS";color:#9933FF">rule "status-Fixed-Open"</span></p>
<p class="MsoNormal" style="margin-left:37.5pt"><span style="font-family:"Comic Sans MS";color:#9933FF"> when</span></p><p class="MsoNormal" style="margin-left:37.5pt"><span style="font-family:"Comic Sans MS";color:#9933FF"> event : FieldChangedEvent(fieldName == "status", oldValue == "Fixed");</span></p>
<p class="MsoNormal" style="margin-left:37.5pt"><span style="font-family:"Comic Sans MS";color:#9933FF"> entity : Entity(entityType == "mock-entity");</span></p><p class="MsoNormal" style="margin-left:37.5pt">
<span style="font-family:"Comic Sans MS";color:#9933FF"> eval(((String) entity.getFieldValue("status")).equals("Open"));</span></p><p class="MsoNormal" style="margin-left:37.5pt">
<span style="font-family:"Comic Sans MS";color:#9933FF"> then </span></p><p class="MsoNormal" style="margin-left:75.0pt"><span style="font-family:"Comic Sans MS";color:#9933FF"> do Something…</span></p>
<p class="MsoNormal"><span style="font-family:"Comic Sans MS";color:#9933FF">end </span></p><p class="MsoNormal"><span style="font-family:"Comic Sans MS";color:#9933FF"> </span></p><p><span style="font-family:"Comic Sans MS";color:#9933FF"><span>-<span style="font:7.0pt "Times New Roman""> </span></span></span><span dir="LTR"></span><span style="font-family:"Comic Sans MS";color:#9933FF">Loading code:</span></p>
<p class="MsoNormal"><span style="font-family:"Comic Sans MS";color:#9933FF"> </span></p><p class="MsoNormal"><span style="font-family:"Comic Sans MS";color:#9933FF">KnowledgeBuilder knowledgeBuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();</span></p>
<p class="MsoNormal"><span style="font-family:"Comic Sans MS";color:#9933FF">for(all resources)</span></p><p class="MsoNormal"><span style="font-family:"Comic Sans MS";color:#9933FF">{</span></p><p class="MsoNormal" style="margin-left:37.5pt;text-indent:34.5pt">
<span style="font-family:"Comic Sans MS";color:#9933FF">knowledgeBuilder.add(resource, ResourceType.DRL);</span></p><p class="MsoNormal"><span style="font-family:"Comic Sans MS";color:#9933FF">}</span></p>
<p class="MsoNormal"><span style="font-family:"Comic Sans MS";color:#9933FF">knowledgeBase = KnowledgeBaseFactory.newKnowledgeBase();</span></p><p class="MsoNormal"><span style="font-family:"Comic Sans MS";color:#9933FF">knowledgeBase.addKnowledgePackages(knowledgeBuilder.getKnowledgePackages());</span></p>
<p class="MsoNormal"><span style="font-family:"Comic Sans MS";color:#9933FF"> </span></p><p class="MsoNormal"><span style="font-family:"Comic Sans MS";color:#9933FF">Any insights are most appreciated.</span></p>
<p class="MsoNormal"><span style="font-family:"Comic Sans MS";color:#9933FF"> </span></p><p class="MsoNormal"><span style="font-family:"Comic Sans MS";color:#9933FF">Thank You,</span></p><p class="MsoNormal">
<span style="font-family:"Comic Sans MS";color:#9933FF">Liron, HP Software R&D</span></p><p class="MsoNormal"><span style="font-family:"Comic Sans MS";color:#9933FF"> </span></p><div><p class="MsoNormal">
<span style="font-size:11.0pt;color:#9933FF"> </span></p></div><p class="MsoNormal"> </p></div></div><br>_______________________________________________<br>
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