https://jira.opendaylight.org This file is an XML representation of an issue en-us 8.20.10 820010 22-06-2022 https://jira.opendaylight.org/browse/OPNFLWPLUG-391 OpenFlowPlugin <p>1) Run karaf<br/> 2) Enable the below features<br/> feature:install odl-openflowplugin-flow-services<br/> feature:install odl-dlux-all<br/> feature:install odl-l2switch-all<br/> feature:install odl-l2switch-switch-ui<br/> feature:install odl-l2switch-switch-rest</p> <p>3) Using mininet connect 40 switches in fully mesh topology<br/> 4) Controller console is unresponsive for few minutes.<br/> 5) Then it throws the below exception.<br/> Exception in thread "odl-stat-rpc-oper-thread-0" java.lang.OutOfMemoryError: Java heap space<br/> at java.util.Arrays.copyOf(Arrays.java:2367)<br/> at java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:130)<br/> at java.lang.AbstractStringBuilder.ensureCapacityInternal(AbstractStringBuilder.java:114)<br/> at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:415)<br/> at java.lang.StringBuilder.append(StringBuilder.java:132)<br/> at java.lang.Throwable.toString(Throwable.java:481)<br/> at org.apache.log4j.OsgiThrowableRenderer.doRender(OsgiThrowableRenderer.java:97)<br/> at org.apache.log4j.OsgiThrowableRenderer.doRender(OsgiThrowableRenderer.java:118)</p> <p>6) I see all 40 openflow sessions.<br/> netstat -ant | grep 6633 | grep ESTABLISHED | wc -l<br/> 40</p> <p>7) But rest call shows me only 20 nodes.<br/> <a href="http://10.11.200.254:8181/restconf/operational/opendaylight-inventory:nodes" class="external-link" target="_blank" rel="nofollow noopener">http://10.11.200.254:8181/restconf/operational/opendaylight-inventory:nodes</a></p> <p>Operating System: All<br/> Platform: All</p> OPNFLWPLUG-391

Controller went out of memory after connecting 40 openflow switches in fully mesh topology

Bug Resolved Done SANDEEP GANGADHARAN SANDEEP GANGADHARAN Tue, 31 Mar 2015 23:20:36 +0000 Mon, 27 Sep 2021 09:01:27 +0000 Wed, 16 Mar 2016 09:20:45 +0000 General 0 7 <p>Attachment log.zip has been added with description: attaching karaf logs</p> <p>I hope you are running against Lithium, since there were a couple of memory optimizations done at the Datastore clustering end.</p> <p>I have run 255 switches, single mininet with a full mesh against 3 controllers and it ran fine.</p> <p>How much memory is given to the controller. Can you connect jconsole to your nodes and check?</p> <p>thanks<br/> Kamal</p> <p>(In reply to Kamal Rameshan from comment #1)<br/> &gt; I hope you are running against Lithium, since there were a couple of memory<br/> &gt; optimizations done at the Datastore clustering end.<br/> &gt; <br/> &gt; I have run 255 switches, single mininet with a full mesh against 3<br/> &gt; controllers and it ran fine.<br/> &gt; <br/> &gt; How much memory is given to the controller. Can you connect jconsole to your<br/> &gt; nodes and check?<br/> &gt; <br/> &gt; thanks<br/> &gt; Kamal</p> <p>I reported this issue on 31st March. I have not tried it on latest builds. Which build are you running this?</p> <p>Regards<br/> Sandeep</p> <p>Should not be an issue any longer - needs to be retested.</p> <p>Attachment karaf.zip has been added with description: Karaf logs on build 2175</p> <p>Sandeep,</p> <p>Can you share the script to create a fully mesh 40 switch topology?</p> <p>Thanks,<br/> Abhijit</p> <p>I tried to reproduce this bug using Lithium SR2 and the controller dint crash. I monitored the memory consumption using JConsole and I dint notice any increase in the heap size. I'm attaching the script that I used to create a 40 switch fully mesh topology.</p> <p>Attachment FullyMesh40.py has been added with description: Script to create a fully mesh topology of 40 switches.</p> <p>Long time no response, if persist open a new bug please.</p> Development External issue ID 2930 External issue URL ODL SR Target Milestone Rank 0|i030v3: