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From: Jonathan Ellis <jbellis@gmail.com>
Date: Wed, 18 Apr 2012 13:18:47 -0500
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Subject: Re: Resident size growth
To: user@cassandra.apache.org
Content-Type: text/plain; charset=ISO-8859-1

On Wed, Apr 18, 2012 at 12:44 PM, Rob Coli <rcoli@palominodb.com> wrote:
> On Tue, Apr 10, 2012 at 8:40 AM, ruslan usifov <ruslan.usifov@gmail.com> wrote:
>> mmap doesn't depend on jna
>
> FWIW, this confusion is as a result of the use of *mlockall*, which is
> used to prevent mmapped files from being swapped, which does depend on
> JNA.

mlockall does depend on JNA, but we only lock the JVM itself in
memory.  The OS is free to page data files in and out as needed.

-- 
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com