<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Greetings:<div><br></div><div>I've been running some benchmarks on some other systems recently using the WaltzDB-200 benchmark. (I have to write the data / rules generator for each vendor and Drools will probably be next after Jess and CLIPS. I've already done OPSJ and TECH.) Using Java 6 / 64-bit system over the Java 5 system dramatically improves performance for the two that I have tried so far and there is no reason to believe that it wouldn't dramatically improve Drools as well. The other thing that really improves performance is moving to a 64-bit systems. Most desktop units (and laptops) are 32-bit OS, not 64-bit. The final nail in the coffin was running DDR3 memory rather than DDR2 memory. All together I got 10 times the performance or better. When you put all of this together, you have a smoking machine. </div><div><br></div><div>So, my vote is for Java 6, 64-bit OS and DDR 3 for any machine: Server, Desktop, laptop, notebook, whatever...</div><div><br><div apple-content-edited="true"> <span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: 'Times New Roman'; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: 'Times New Roman'; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: 'Times New Roman'; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: 'Times New Roman'; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div><div><div><div><div><div><div><div><div><div><div><div><div><div><div><div>SDG</div><div>James Owen</div><div>Founder October Rules Fest</div><div>Senior Consultant / Architect KBSC</div><div><span class="Apple-style-span" style="font-family: 'Bodoni SvtyTwo SC ITC TT'; "><font class="Apple-style-span" color="#976635"><a href="http://www.kbsc.com">http://www.kbsc.com</a></font></span></div><div><span class="Apple-style-span" style="font-family: 'Bodoni SvtyTwo SC ITC TT'; "><font class="Apple-style-span" color="#976635"><a href="http://www.OctoberRulesFest.org">http://www.OctoberRulesFest.org</a></font></span></div><div><font class="Apple-style-span" face="'Bodoni SvtyTwo SC ITC TT'"><font class="Apple-style-span" color="#976635">Twitter: OctRulesFest</font></font></div><div><font class="Apple-style-span" face="Garamond"><font class="Apple-style-span" color="#0000FF">Blogs:</font></font></div><div><font class="Apple-style-span" face="Garamond"><font class="Apple-style-span" color="#0000FF"><a href="http://JavaRules.blogspot.com">http://JavaRules.blogspot.com</a> [Rulebased Systems Blog]</font></font></div><div><font class="Apple-style-span" face="Garamond"><font class="Apple-style-span" color="#0000FF"><a href="http://ORF2009.blogspot.com">http://ORF2009.blogspot.com</a> [October Rules Fest Blog]</font></font></div><div><font class="Apple-style-span" face="Garamond"><font class="Apple-style-span" color="#0000FF"><a href="http://exscg.blogspot.com/">http://exscg.blogspot.com/</a> [Expert Systems Consulting Group Blog]</font></font></div><div><font class="Apple-style-span" color="#0000FF" face="Garamond"><br></font></div><div><font class="Apple-style-span" color="#0000FF"><font class="Apple-style-span" face="'Lucida Handwriting'" size="4"><span class="Apple-style-span" style="font-size: 14px; "><i>"If I have seen a little further it is by standing on the shoulders of giants."</i></span></font></font></div><div><font class="Apple-style-span" size="4"><span class="Apple-style-span" style="font-size: 14px; "><b>Sir Isaac Newton in a letter to Robert Hooke, 5 Feb 1676</b></span></font></div><div><font class="Apple-style-span" color="#FF0000"><span class="Apple-style-span" style="font-size: medium; "><b><br></b></span></font></div><div><span class="Apple-style-span" style="font-size: medium; "><b>Come to October Rules Fest and stand on the shoulders of the Giants of the industry; if only for a week.</b></span></div><div><font class="Apple-style-span" face="arial" size="3"><span class="Apple-style-span" style="font-size: 12px; line-height: 14px; -webkit-border-horizontal-spacing: 6px; -webkit-border-vertical-spacing: 6px; "><br></span></font></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></span></div></span></div></div></div></span></div></span><br class="Apple-interchange-newline"> </div><br><div><div>On Oct 7, 2009, at 2:38 AM, Michael Neale wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>yeah its a pain - even if we have to target 1.5 (which is entirely<br>reasonable for the next few releases) we can probably *require* that<br>it is built with JDK6, using whatever dirty tricks there are to make<br>the bytecode work with 1.5.<br><br>Apparently the EOL is for the Sun JVM, the IBM and other ones have a<br>longer life, it seems (and in many cases, the EOL of support on the<br>core JVM is ignored by users, more so then the app servers or<br>libraries or applications they run on top ! I have no idea why it is<br>that way, it just is. Probably like how some places still have Windows<br>2000 or NT around !).<br><br><br>On Wed, Oct 7, 2009 at 4:44 AM, Geoffrey De Smet<br><<a href="mailto:ge0ffrey.spam@gmail.com">ge0ffrey.spam@gmail.com</a>> wrote:<br><blockquote type="cite"><blockquote type="cite"> To compile trunk with Java 6, for now you have to use "-source 1.5".<br></blockquote></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">That doesn't work, as the maven compiler plugin is already set to use<br></blockquote><blockquote type="cite">source 1.5 in the main pom and I can't compile with jdk 6. It can only<br></blockquote><blockquote type="cite">be compiled with jdk 5 it seems, not jdk 6.<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">With kind regards,<br></blockquote><blockquote type="cite">Geoffrey De Smet<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Edson Tirelli schreef:<br></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> Geoffrey,<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> Java 6 API change was not source backward compatible with Java 5.<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">Drools 5.1m1 is supposed to compile only with Java 5.<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> We will probably move to Java 6 for the next milestone, since Java 5<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">is EOL this month anyway, but you need to rollback your change meanwhile.<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> To compile trunk with Java 6, for now you have to use "-source 1.5".<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> Edson<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">2009/10/6 Geoffrey De Smet <<a href="mailto:ge0ffrey.spam@gmail.com">ge0ffrey.spam@gmail.com</a><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><<a href="mailto:ge0ffrey.spam@gmail.com">mailto:ge0ffrey.spam@gmail.com</a>>><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> I've fixed it on trunk with this commit:<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> "compilation error on jdk 6 (not on jdk 5) because the ExectutorService<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> interface in java 6 follows the Joshua Bloch PECS pattern (so<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> Collection<? extends Callable...> instead of just<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> Collection<Callable...>)"<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> See<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> <a href="http://fisheye.jboss.org/browse/JBossRules/trunk/drools-core/src/main/java/org/drools/concurrent/ExternalExecutorService.java?r1=29459&r2=29541">http://fisheye.jboss.org/browse/JBossRules/trunk/drools-core/src/main/java/org/drools/concurrent/ExternalExecutorService.java?r1=29459&r2=29541</a><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> <<a href="http://fisheye.jboss.org/browse/JBossRules/trunk/drools-core/src/main/java/org/drools/concurrent/ExternalExecutorService.java?r1=29459&r2=29541">http://fisheye.jboss.org/browse/JBossRules/trunk/drools-core/src/main/java/org/drools/concurrent/ExternalExecutorService.java?r1=29459&r2=29541</a>><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> With kind regards,<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> Geoffrey De Smet<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> Geoffrey De Smet schreef:<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> > When I try "mvn clean install -DskipTests", I get this (java version<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> > "1.6.0_16"):<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> ><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> > [INFO]<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> ><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> ------------------------------------------------------------------------<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> > [ERROR] BUILD FAILURE<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> > [INFO]<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> ><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> ------------------------------------------------------------------------<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> > [INFO] Compilation failure<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> ><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> /home/ge0ffrey/projects/jboss/drools/drools-core/src/main/java/org/drools/concurrent/ExternalExecutorService.java:[31,7]<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> > org.drools.concurrent.ExternalExecutorService is not abstract and<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> does<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> > not override abstract method <T>invokeAny(java.util.Collection<?<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> extends<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> ><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> java.util.concurrent.Callable<T>>,long,java.util.concurrent.TimeUnit) in<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> > java.util.concurrent.ExecutorService<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> ><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> ><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> ><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> ><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> /home/ge0ffrey/projects/jboss/drools/drools-core/src/main/java/org/drools/concurrent/ExternalExecutorService.java:[31,7]<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> > org.drools.concurrent.ExternalExecutorService is not abstract and<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> does<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> > not override abstract method <T>invokeAny(java.util.Collection<?<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> extends<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> ><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> java.util.concurrent.Callable<T>>,long,java.util.concurrent.TimeUnit) in<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> > java.util.concurrent.ExecutorService<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> ><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> ><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> _______________________________________________<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> rules-dev mailing list<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> rules-dev@lists.jboss.org <<a href="mailto:rules-dev@lists.jboss.org">mailto:rules-dev@lists.jboss.org</a>><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> <a href="https://lists.jboss.org/mailman/listinfo/rules-dev">https://lists.jboss.org/mailman/listinfo/rules-dev</a><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">--<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> Edson Tirelli<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> JBoss Drools Core Development<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> JBoss by Red Hat @ www.jboss.com <<a href="http://www.jboss.com">http://www.jboss.com</a>><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">------------------------------------------------------------------------<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">_______________________________________________<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">rules-dev mailing list<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><a href="mailto:rules-dev@lists.jboss.org">rules-dev@lists.jboss.org</a><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><a href="https://lists.jboss.org/mailman/listinfo/rules-dev">https://lists.jboss.org/mailman/listinfo/rules-dev</a><br></blockquote></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">_______________________________________________<br></blockquote><blockquote type="cite">rules-dev mailing list<br></blockquote><blockquote type="cite"><a href="mailto:rules-dev@lists.jboss.org">rules-dev@lists.jboss.org</a><br></blockquote><blockquote type="cite"><a href="https://lists.jboss.org/mailman/listinfo/rules-dev">https://lists.jboss.org/mailman/listinfo/rules-dev</a><br></blockquote><blockquote type="cite"><br></blockquote><br><br><br>-- <br>Michael D Neale<br>home: <a href="http://www.michaelneale.net">www.michaelneale.net</a><br>blog: michaelneale.blogspot.com<br><br>_______________________________________________<br>rules-dev mailing list<br><a href="mailto:rules-dev@lists.jboss.org">rules-dev@lists.jboss.org</a><br>https://lists.jboss.org/mailman/listinfo/rules-dev<br></div></blockquote></div><br></div></body></html>