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1. Re: Memory not released after shutting down JBOSS, memory le
genman May 18, 2007 8:31 PM (in response to javatwo)If the JVM process is gone, what's using your memory?
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2. Re: Memory not released after shutting down JBOSS, memory le
4l3xb Jun 9, 2007 3:31 AM (in response to javatwo)The memory still used is most likely to be the filesystem cache. Linux will load all the files that JBoss needs into memory and cache them (like jars etc).
Read the first part of this article. Although it's written with db2 in mind, it explains the effect you are seeing.
http://www.ibm.com/developerworks/db2/library/techarticle/dm-0509wright/
Basically, there is nothing to worry about.
I would worry about paging to swap space if it happens, which will show up as si/so columns in vmstat or high disk utilisation, viewed with 'iostat' command.
This arcticle shows how to interpret vmstat, which is also important: http://www.linuxjournal.com/article/8178
Regards