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From "Yi Yang"...@iyyang.com>
Subject Re: release mmap memory through jconsole?
Date Fri, 30 Sep 2011 16:45:28 GMT
It is meaningless to release such memory. The counting includes the data you reached in the
SSTable. Those data locates on your hard drive. So it is not the RAM spaces you have actually
used.

-Y.
------Original Message------
From: Yang
To: user@cassandra.apache.org
ReplyTo: user@cassandra.apache.org
Subject: release mmap memory through jconsole?
Sent: Oct 1, 2011 12:40 AM

I gave an -Xmx50G to my Cassandra java processs, now "top" shows its
virtual memory address space is 82G, is there
a way to release that memory through JMX ?

Thanks
Yang

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