topic Groovy script tasks and excessive major garbage collections in Alfresco Archive https://connect.hyland.com/t5/alfresco-archive/groovy-script-tasks-and-excessive-major-garbage-collections/m-p/153084#M107680 <HTML><HEAD></HEAD><BODY><SPAN>After load-testing my app (~100k executed processes)&nbsp; I observed a memory problem using Groovy script tasks in Activiti processes. It boils down to excessive major garbage collections which slows down entire system. </SPAN><BR /><SPAN>Next I isolated the problem (simple process with simple bootstrap app that starts the processes in a loop - </SPAN><A href="https://docs.google.com/file/d/0B3SW4GfzebTkbF9odGJNS3NyTTA/edit?usp=sharing" rel="nofollow noopener noreferrer">zzzActiviti.tar.gz</A><SPAN>) and used jstat to measure gc:</SPAN><BR /><BR /><PRE class="language-none line-numbers"><CODE><BR />$ java -version<BR />java version "1.6.0_45"<BR />Java(TM) SE Runtime Environment (build 1.6.0_45-b06)<BR />Java HotSpot(TM) 64-Bit Server VM (build 20.45-b01, mixed mode)<BR />$ uname -a<BR />Linux PC03 3.2.0-29-generic #46-Ubuntu SMP Fri Jul 27 17:03:23 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux<BR /><BR />$ mvn compile<BR />$ export MAVEN_OPTS="-Xmx512m -XX:MaxPermSize=256m"<BR />$ mvn exec:java -Dexec.mainClass="ZzzActivitiMain" &amp;&gt; output.log &amp;<BR />[1] 2456<BR />$ jstat -gc 2456 5000<BR /><BR />EC&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; EU&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; OC&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; OU&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; PC&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; PU&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; YGC&nbsp;&nbsp;&nbsp; YGCT&nbsp; FGC&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; FGCT&nbsp;&nbsp;&nbsp;&nbsp; GCT&nbsp;&nbsp; <BR />118976,0 80852,1 79872,0&nbsp;&nbsp;&nbsp; 3089,3&nbsp;&nbsp;&nbsp; 42560,0&nbsp; 42410,0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 6&nbsp;&nbsp;&nbsp; 0,070&nbsp;&nbsp; 0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0,000&nbsp;&nbsp;&nbsp; 0,070<BR />115968,0 56815,0 79872,0&nbsp;&nbsp;&nbsp; 43960,8&nbsp;&nbsp; 48704,0&nbsp; 48655,2&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 9&nbsp;&nbsp;&nbsp; 0,184&nbsp;&nbsp; 0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0,000&nbsp;&nbsp;&nbsp; 0,184<BR />58240,0&nbsp; 0,0&nbsp;&nbsp;&nbsp;&nbsp; 147008,0&nbsp;&nbsp; 139810,6&nbsp; 100096,0 55665,5&nbsp;&nbsp;&nbsp;&nbsp; 15&nbsp;&nbsp;&nbsp; 0,364&nbsp;&nbsp; 2&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0,343&nbsp;&nbsp;&nbsp; 0,707<BR />58240,0&nbsp; 0,0&nbsp;&nbsp;&nbsp;&nbsp; 256576,0&nbsp;&nbsp; 223691,1&nbsp; 116672,0 64095,8&nbsp;&nbsp;&nbsp;&nbsp; 23&nbsp;&nbsp;&nbsp; 0,613&nbsp;&nbsp; 3&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0,757&nbsp;&nbsp;&nbsp; 1,370<BR />58240,0&nbsp; 20977,0 349568,0&nbsp;&nbsp; 307842,9&nbsp; 120448,0 72860,2&nbsp;&nbsp;&nbsp;&nbsp; 31&nbsp;&nbsp;&nbsp; 0,835&nbsp;&nbsp; 3&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1,350&nbsp;&nbsp;&nbsp; 2,185<BR />58240,0&nbsp; 58240,0 349568,0&nbsp;&nbsp; 347955,4&nbsp; 121920,0 76346,5&nbsp;&nbsp;&nbsp;&nbsp; 32&nbsp;&nbsp;&nbsp; 0,856&nbsp;&nbsp; 7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 4,129&nbsp;&nbsp;&nbsp; 4,985<BR />58240,0&nbsp; 58240,0 349568,0&nbsp;&nbsp; 349567,9&nbsp; 109824,0 78896,1&nbsp;&nbsp;&nbsp;&nbsp; 32&nbsp;&nbsp;&nbsp; 0,856&nbsp; 11&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 7,809&nbsp;&nbsp;&nbsp; 8,665<BR />58240,0&nbsp; 58240,0 349568,0&nbsp;&nbsp; 349567,9&nbsp; 97984,0&nbsp; 80035,6&nbsp;&nbsp;&nbsp;&nbsp; 32&nbsp;&nbsp;&nbsp; 0,856&nbsp; 15&nbsp;&nbsp;&nbsp;&nbsp; 11,685&nbsp;&nbsp; 12,541<BR />58240,0&nbsp; 58240,0 349568,0&nbsp;&nbsp; 349568,0&nbsp; 89344,0&nbsp; 80618,2&nbsp;&nbsp;&nbsp;&nbsp; 32&nbsp;&nbsp;&nbsp; 0,856&nbsp; 20&nbsp;&nbsp;&nbsp;&nbsp; 16,501&nbsp;&nbsp; 17,357<BR />58240,0&nbsp; 58240,0 349568,0&nbsp;&nbsp; 349568,0&nbsp; 84928,0&nbsp; 80885,8&nbsp;&nbsp;&nbsp;&nbsp; 32&nbsp;&nbsp;&nbsp; 0,856&nbsp; 25&nbsp;&nbsp;&nbsp;&nbsp; 21,312&nbsp;&nbsp; 22,168<BR />58240,0&nbsp; 4044,4&nbsp; 217856,0&nbsp;&nbsp; 34305,1&nbsp;&nbsp; 43904,0&nbsp; 43506,8&nbsp;&nbsp;&nbsp;&nbsp; 33&nbsp;&nbsp;&nbsp; 0,875&nbsp; 30&nbsp;&nbsp;&nbsp;&nbsp; 26,376&nbsp;&nbsp; 27,250<BR />57216,0&nbsp; 38979,7 217856,0&nbsp;&nbsp; 117382,4&nbsp; 54464,0&nbsp; 54269,1&nbsp;&nbsp;&nbsp;&nbsp; 43&nbsp;&nbsp;&nbsp; 1,124&nbsp; 30&nbsp;&nbsp;&nbsp;&nbsp; 26,376&nbsp;&nbsp; 27,499<BR />55104,0&nbsp; 6640,1&nbsp; 349568,0&nbsp;&nbsp; 226050,5&nbsp; 75392,0&nbsp; 63492,8&nbsp;&nbsp;&nbsp;&nbsp; 53&nbsp;&nbsp;&nbsp; 1,405&nbsp; 31&nbsp;&nbsp;&nbsp;&nbsp; 27,062&nbsp;&nbsp; 28,468<BR />56640,0&nbsp; 0,0&nbsp;&nbsp;&nbsp;&nbsp; 349568,0&nbsp;&nbsp; 327553,8&nbsp; 75392,0&nbsp; 74491,6&nbsp;&nbsp;&nbsp;&nbsp; 64&nbsp;&nbsp;&nbsp; 1,656&nbsp; 32&nbsp;&nbsp;&nbsp;&nbsp; 27,062&nbsp;&nbsp; 28,718<BR />56640,0&nbsp; 37095,4 349568,0&nbsp;&nbsp; 349566,9&nbsp; 91200,0&nbsp; 77300,6&nbsp;&nbsp;&nbsp;&nbsp; 64&nbsp;&nbsp;&nbsp; 1,656&nbsp; 35&nbsp;&nbsp;&nbsp;&nbsp; 30,697&nbsp;&nbsp; 32,353<BR />56640,0&nbsp; 56640,0 349568,0&nbsp;&nbsp; 349561,3&nbsp; 88064,0&nbsp; 79363,5&nbsp;&nbsp;&nbsp;&nbsp; 64&nbsp;&nbsp;&nbsp; 1,656&nbsp; 40&nbsp;&nbsp;&nbsp;&nbsp; 34,228&nbsp;&nbsp; 35,884<BR />56640,0&nbsp; 56640,0 349568,0&nbsp;&nbsp; 349561,0&nbsp; 84992,0&nbsp; 80285,6&nbsp;&nbsp;&nbsp;&nbsp; 64&nbsp;&nbsp;&nbsp; 1,656&nbsp; 45&nbsp;&nbsp;&nbsp;&nbsp; 38,654&nbsp;&nbsp; 40,310<BR />56640,0&nbsp; 56640,0 349568,0&nbsp;&nbsp; 349561,0&nbsp; 82496,0&nbsp; 80630,2&nbsp;&nbsp;&nbsp;&nbsp; 64&nbsp;&nbsp;&nbsp; 1,656&nbsp; 51&nbsp;&nbsp;&nbsp;&nbsp; 43,922&nbsp;&nbsp; 45,578<BR />56640,0&nbsp; 56640,0 349568,0&nbsp;&nbsp; 349560,9&nbsp; 81856,0&nbsp; 80719,8&nbsp;&nbsp;&nbsp;&nbsp; 64&nbsp;&nbsp;&nbsp; 1,656&nbsp; 56&nbsp;&nbsp;&nbsp;&nbsp; 48,379&nbsp;&nbsp; 50,035<BR />54208,0&nbsp; 39264,9 214784,0&nbsp;&nbsp; 78622,4&nbsp;&nbsp; 50496,0&nbsp; 50295,4&nbsp;&nbsp;&nbsp;&nbsp; 71&nbsp;&nbsp;&nbsp; 1,852&nbsp; 58&nbsp;&nbsp;&nbsp;&nbsp; 50,733&nbsp;&nbsp; 52,585<BR />55168,0&nbsp; 0,0&nbsp;&nbsp;&nbsp;&nbsp; 214784,0&nbsp;&nbsp; 197725,4&nbsp; 60480,0&nbsp; 60387,0&nbsp;&nbsp;&nbsp;&nbsp; 82&nbsp;&nbsp;&nbsp; 2,098&nbsp; 59&nbsp;&nbsp;&nbsp;&nbsp; 50,733&nbsp;&nbsp; 52,832<BR />55296,0&nbsp; 30960,2 349568,0&nbsp;&nbsp; 304583,7&nbsp; 72832,0&nbsp; 71474,8&nbsp;&nbsp;&nbsp;&nbsp; 93&nbsp;&nbsp;&nbsp; 2,421&nbsp; 59&nbsp;&nbsp;&nbsp;&nbsp; 51,417&nbsp;&nbsp; 53,838<BR />56192,0&nbsp; 56192,0 349568,0&nbsp;&nbsp; 343348,6&nbsp; 89472,0&nbsp; 75487,2&nbsp;&nbsp;&nbsp;&nbsp; 95&nbsp;&nbsp;&nbsp; 2,461&nbsp; 63&nbsp;&nbsp;&nbsp;&nbsp; 54,095&nbsp;&nbsp; 56,556<BR />56192,0&nbsp; 56192,0 349568,0&nbsp;&nbsp; 349567,0&nbsp; 87360,0&nbsp; 78194,5&nbsp;&nbsp;&nbsp;&nbsp; 95&nbsp;&nbsp;&nbsp; 2,461&nbsp; 67&nbsp;&nbsp;&nbsp;&nbsp; 57,735&nbsp;&nbsp; 60,196<BR />56192,0&nbsp; 56192,0 349568,0&nbsp;&nbsp; 349566,9&nbsp; 84672,0&nbsp; 79554,4&nbsp;&nbsp;&nbsp;&nbsp; 95&nbsp;&nbsp;&nbsp; 2,461&nbsp; 72&nbsp;&nbsp;&nbsp;&nbsp; 62,402&nbsp;&nbsp; 64,862<BR />56192,0&nbsp; 56192,0 349568,0&nbsp;&nbsp; 349566,2&nbsp; 82496,0&nbsp; 80118,4&nbsp;&nbsp;&nbsp;&nbsp; 95&nbsp;&nbsp;&nbsp; 2,461&nbsp; 77&nbsp;&nbsp;&nbsp;&nbsp; 67,349&nbsp;&nbsp; 69,809<BR />56192,0&nbsp; 56192,0 349568,0&nbsp;&nbsp; 349566,2&nbsp; 81728,0&nbsp; 80298,3&nbsp;&nbsp;&nbsp;&nbsp; 95&nbsp;&nbsp;&nbsp; 2,461&nbsp; 82&nbsp;&nbsp;&nbsp;&nbsp; 71,812&nbsp;&nbsp; 74,273<BR />[code]<BR /><BR />As you can see, after ~1min the old generation is full and major GC runs about every second.<BR />Any solutions (beside using javascript or not using script tasks:) )?<BR /><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN></CODE></PRE></BODY></HTML> Tue, 03 Sep 2013 15:55:50 GMT tomasz_lewandow 2013-09-03T15:55:50Z Groovy script tasks and excessive major garbage collections https://connect.hyland.com/t5/alfresco-archive/groovy-script-tasks-and-excessive-major-garbage-collections/m-p/153084#M107680 After load-testing my app (~100k executed processes)&nbsp; I observed a memory problem using Groovy script tasks in Activiti processes. It boils down to excessive major garbage collections which slows down entire system. Next I isolated the problem (simple process with simple bootstrap app that starts th Tue, 03 Sep 2013 15:55:50 GMT https://connect.hyland.com/t5/alfresco-archive/groovy-script-tasks-and-excessive-major-garbage-collections/m-p/153084#M107680 tomasz_lewandow 2013-09-03T15:55:50Z Re: Groovy script tasks and excessive major garbage collections https://connect.hyland.com/t5/alfresco-archive/groovy-script-tasks-and-excessive-major-garbage-collections/m-p/153085#M107681 <HTML><HEAD></HEAD><BODY><SPAN>.</SPAN></BODY></HTML> Wed, 04 Sep 2013 07:13:51 GMT https://connect.hyland.com/t5/alfresco-archive/groovy-script-tasks-and-excessive-major-garbage-collections/m-p/153085#M107681 tomasz_lewandow 2013-09-04T07:13:51Z Re: Groovy script tasks and excessive major garbage collections https://connect.hyland.com/t5/alfresco-archive/groovy-script-tasks-and-excessive-major-garbage-collections/m-p/153086#M107682 <HTML><HEAD></HEAD><BODY><SPAN>We just pass the script-execution on to the JSR-223 (Scripting), so this is nothing acidity can change, I'm affriad. If you're going to have a lot of processes like you do, consider using compiled JavaDelegate as opposed to using scripts…</SPAN></BODY></HTML> Wed, 04 Sep 2013 09:52:41 GMT https://connect.hyland.com/t5/alfresco-archive/groovy-script-tasks-and-excessive-major-garbage-collections/m-p/153086#M107682 frederikherema1 2013-09-04T09:52:41Z Re: Groovy script tasks and excessive major garbage collections https://connect.hyland.com/t5/alfresco-archive/groovy-script-tasks-and-excessive-major-garbage-collections/m-p/153087#M107683 <HTML><HEAD></HEAD><BODY><SPAN>That doesn't sound good … but we're actually using the default JDK mechanism to fire off scripts so I don't know if improvement could be made here …</SPAN><BR /><BR /><SPAN>Did you try on JDK 7? Scripting has improved on it.</SPAN></BODY></HTML> Wed, 04 Sep 2013 09:56:39 GMT https://connect.hyland.com/t5/alfresco-archive/groovy-script-tasks-and-excessive-major-garbage-collections/m-p/153087#M107683 jbarrez 2013-09-04T09:56:39Z