[jboss-user] [Performance Tuning] - JBoss 4.05 memory issue

[bakry]

hi,

I have a problem with jboss memory utilization, I am running one application with minimal hits (memory needs) on a 4.0.5 jboss server... here is the config of jboss >>

-Xms128m -Xmx1500m -XX:MaxPermSize=512m   -Dsun.rmi.dgc.client.gcInterval=3600000 -Dsun.rmi.dgc.server.gcInterval=3600000

the server start with 128 and keeps eating memory very fast till it reach 1 to 1.3 GB (which is not normal for my application needs).... anyway my issue is that total memory is very high while the server has high free memory... what I understand is that on garbage collector the server should shrink the heap and thus the total memory... 

here is the web-console display:


Free Memory: 771 MB

Max Memory: 1365 MB

Total Memory: 1344 MB


here is my memory pool view of the ServerInfo jmx bean:


Total Memory Pools: 5

    Pool: Code Cache (Non-heap memory)

        Peak Usage : init:1572864, used:31555520, committed:31621120, max:33554432
        Current Usage : init:1572864, used:31503104, committed:31621120, max:33554432


            |----------------------------------------------------------------| committed:30.16Mb
            +---------------------------------------------------------------------+
            |////////////////////////////////////////////////////////////////| | max:32Mb
            +---------------------------------------------------------------------+
            |----------------------------------------------------------------| used:30.04Mb


    Pool: PS Eden Space (Heap memory)

        Peak Usage : init:34603008, used:411435008, committed:411435008, max:535560192
        Current Usage : init:34603008, used:20664872, committed:179044352, max:179044352


            |---------------------------------------------------------------------| committed:170.75Mb
            +---------------------------------------------------------------------+
            |//////// | max:170.75Mb
            +---------------------------------------------------------------------+
            |-------| used:19.71Mb


    Pool: PS Survivor Space (Heap memory)

        Peak Usage : init:5767168, used:178913200, committed:178913280, max:178913280
        Current Usage : init:5767168, used:33169288, committed:178913280, max:178913280


            |---------------------------------------------------------------------| committed:170.62Mb
            +---------------------------------------------------------------------+
            |//////////// | max:170.62Mb
            +---------------------------------------------------------------------+
            |-----------| used:31.63Mb


    Pool: PS Old Gen (Heap memory)

        Peak Usage : init:92274688, used:1073741664, committed:1073741824, max:1073741824
        Current Usage : init:92274688, used:674116608, committed:1073741824, max:1073741824


            |---------------------------------------------------------------------| committed:1Gb
            +---------------------------------------------------------------------+
            |/////////////////////////////////////////// | max:1Gb
            +---------------------------------------------------------------------+
            |------------------------------------------| used:642.89Mb


    Pool: PS Perm Gen (Non-heap memory)

        Peak Usage : init:16777216, used:141709616, committed:192937984, max:268435456
        Current Usage : init:16777216, used:81833240, committed:104857600, max:268435456


            |--------------------------| committed:100Mb
            +---------------------------------------------------------------------+
            |///////////////////// | | max:256Mb
            +---------------------------------------------------------------------+
            |--------------------| used:78.04Mb










is there any tuning parameters I could use to change this behavior, I get out of memory error every week.... 


Regards







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