Originally posted by: Selvasubramanian
Hi,
Our current AIX environment is 5.3.0.0. Our system is heap size is 2GB.
We are facing some issues in our AIX environment with Garbage Collection.
In our environment when the Heap is requested to extend ,it is happening without any issues. But the free heap ratio 30% is not maintaining. For example if the heap is expanded to 2 GB and free heap is 1 GB, theoretically the heap size should shrink by at least 500 – 700 MB. This heap shrink is not happening.
Please find the parameters that are using in our environment currently.
-Xgcpolicy:subpool -Xk20000 -Xp50m,10m -Xloratio0.2 -verbose:gc -Dibm.dg.trc.print=st_verify -Xms256m -Xmx2048m -Dcom.vignette.jvmid=VgnVCM1 -Dcom.vignette.workingDir=/217fs03/vendors/vignette/vcm/inst-vgninst -Dcom.vignette.installDir=/217fs03/vendors/vignette/Content/7_3_1 -Djavax.xml.parsers.DocumentBuilderFactory=org.apache.xerces.jaxp.DocumentBuilderFactoryImpl -Djavax.xml.parsers.SAXParserFactory=org.apache.xerces.jaxp.SAXParserFactoryImpl -Dorg.apache.commons.logging.Log=com.vignette.logging.CommonsLogger -Djava.awt.headless=true -DHttpSessionIdReuse=true -Dsun.reflect.inflationThreshold=0
Recently we are facing problem with our environment, due to out of memory error. Please suggest me what are the parameters need to concentrate to maintain the free heap ratio as well as heap shrinkage.
Regards,
Selva
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