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From Abhinav2510 <>
Subject activemq memory usage 4 times greater than Maximum heap allocated
Date Mon, 04 Sep 2017 20:00:53 GMT
Hi All,

I have below configuration for my java actvemq process where Xmx is 15360M
but when I see the process usage of memory using glance I see  RSS 41.8gb 
and VSS  51.6gb . pmap <process_id>|grep total gives me  total 54059348K. I
am not sure what is happening in activemq that is causing this much amount
of memory being utilized. While heap usage is pretty low till 60%.

In the output of pmap I see lot of anon blocks. Please find attached PMAP

/XXXXX 111922      1 22 14:30 pts/0    00:04:26
/u/users/user/jdk1.7.0_71/bin/java -Xms1024M -Xmx15360M -Xss512K
-XX:+UseG1GC -XX:NewRatio=4 -XX:InitiatingHeapOccupancyPercent=45
-XX:+PrintGCDetails -XX:+PrintGCDateStamps -Xloggc:/x/logs/AMQGC.log
-XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=20M
-jar /u/users/user/POSInterfaces/apache-activemq-5.13.2//bin/activemq.jar
pmap.txt <>  

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