https://community.cloudera.com/t5/Archives-of-Support-Questions/HDP-2-2-resource-manager-UI-open-slowly/m-p/140182#M23559 <P>Your probably short on resources, please run <A href="http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.3.4.7/bk_installing_manually_book/content/determine-hdp-memory-config.html" target="_blank">http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.3.4.7/bk_installing_manually_book/content/determine-hdp-memory-config.html</A> pick documentation relevant to your exact version of hdp</P> Wed, 23 Mar 2016 14:37:21 GMT aervits 2016-03-23T14:37:21Z https://community.cloudera.com/t5/Archives-of-Support-Questions/HDP-2-2-resource-manager-UI-open-slowly/m-p/140181#M23558 <P>I found our resource manager UI access quite slowly. sometimes it will take over several mins for show all jobs.</P><P>I found some exception from resource log as below, btw I found resource manager permgen size default size is 20MB and it's usage over 99.3%. is there any solution for this?</P><P>###part resource manger logs########################### </P><P>I/O exception (java.net.ConnectException) caught when processing request: Connection refused</P> Wed, 23 Mar 2016 14:36:34 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/HDP-2-2-resource-manager-UI-open-slowly/m-p/140181#M23558 bigdatacn 2016-03-23T14:36:34Z https://community.cloudera.com/t5/Archives-of-Support-Questions/HDP-2-2-resource-manager-UI-open-slowly/m-p/140182#M23559 <P>Your probably short on resources, please run <A href="http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.3.4.7/bk_installing_manually_book/content/determine-hdp-memory-config.html" target="_blank">http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.3.4.7/bk_installing_manually_book/content/determine-hdp-memory-config.html</A> pick documentation relevant to your exact version of hdp</P> Wed, 23 Mar 2016 14:37:21 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/HDP-2-2-resource-manager-UI-open-slowly/m-p/140182#M23559 aervits 2016-03-23T14:37:21Z