High load on CentOS 7

[Laurens Vets <la...@daemon.be>]

Hi list,

I've installed metron on CentOS 7 and when I start all services, the 
load is really high (as in 20+ on 4 and 8 CPUs). The same install on a 
CentOS 6 VM is fine... (load is 0.5 there).

When I look at htop, the pid 27867 has 300%+ CPU% which is:

storm     27867  328  3.2 6653844 1056312 ?     Sl   11:53   8:52 
/usr/jdk64/jdk1.8.0_77/bin/java -server -Xmx768m 
-javaagent:/usr/hdp/current/storm-client/contrib/storm-jmxetric/lib/jmxetric-1.0.4.jar=host=localhost,port=8650,wireformat31x=true,mode=multicast,config=/usr/hdp/current/storm-client/contrib/storm-jmxetric/conf/jmxetric-conf.xml,process=Worker_6700_JVM 
-Djava.library.path=/data1/hadoop/storm/supervisor/stormdist/enrichment-1-1496861469/resources/Linux-amd64:/data1/hadoop/storm/supervisor/stormdist/enrichment-1-1496861469/resources:/usr/local/lib:/opt/local/lib:/usr/lib:/usr/hdp/current/storm-client/lib 
-Dlogfile.name=worker.log -Dstorm.home=/usr/hdp/2.5.3.0-37/storm 
-Dworkers.artifacts=/var/log/storm/workers-artifacts -Dstorm.conf.file= 
-Dstorm.options= -Dstorm.log.dir=/var/log/storm 
-Djava.io.tmpdir=/data1/hadoop/storm/workers/44e84652-9940-430a-ae10-7ba5b1962a84/tmp 
-Dlogging.sensitivity=S3 
-Dlog4j.configurationFile=/usr/hdp/2.5.3.0-37/storm/log4j2/worker.xml 
-DLog4jContextSelector=org.apache.logging.log4j.core.selector.BasicContextSelector 
-Dstorm.id=enrichment-1-1496861469 
-Dworker.id=44e84652-9940-430a-ae10-7ba5b1962a84 -Dworker.port=6700 -cp 
/usr/hdp/2.5.3.0-37/storm/lib/asm-5.0.3.jar:/usr/hdp/2.5.3.0-37/storm/lib/clojure-1.7.0.jar:/usr/hdp/2.5.3.0-37/storm/lib/disruptor-3.3.2.jar:/usr/hdp/2.5.3.0-37/storm/lib/kryo-3.0.3.jar:/usr/hdp/2.5.3.0-37/storm/lib/log4j-api-2.1.jar:/usr/hdp/2.5.3.0-37/storm/lib/log4j-core-2.1.jar:/usr/hdp/2.5.3.0-37/storm/lib/log4j-over-slf4j-1.6.6.jar:/usr/hdp/2.5.3.0-37/storm/lib/log4j-slf4j-impl-2.1.jar:/usr/hdp/2.5.3.0-37/storm/lib/minlog-1.3.0.jar:/usr/hdp/2.5.3.0-37/storm/lib/objenesis-2.1.jar:/usr/hdp/2.5.3.0-37/storm/lib/reflectasm-1.10.1.jar:/usr/hdp/2.5.3.0-37/storm/lib/ring-cors-0.1.5.jar:/usr/hdp/2.5.3.0-37/storm/lib/servlet-api-2.5.jar:/usr/hdp/2.5.3.0-37/storm/lib/slf4j-api-1.7.7.jar:/usr/hdp/2.5.3.0-37/storm/lib/storm-core-1.0.1.2.5.3.0-37.jar:/usr/hdp/2.5.3.0-37/storm/lib/storm-rename-hack-1.0.1.2.5.3.0-37.jar:/usr/hdp/2.5.3.0-37/storm/lib/zookeeper.jar:/usr/hdp/2.5.3.0-37/storm/lib/ambari-metrics-storm-sink.jar:/usr/hdp/current/storm-supervisor/conf:/data1/hadoop/storm/supervisor/
stormdist/enrichment-1-1496861469/stormjar.jar:/etc/hbase/conf:/etc/hadoop/conf 
org.apache.storm.daemon.worker enrichment-1-1496861469 
9c90251f-54cc-42d7-8c4e-6f3bb2528752 6700 
44e84652-9940-430a-ae10-7ba5b1962a84

Any idea what might cause this?

Again, same install on CentOS 6, everything's fine...