cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Jonathan Ellis <jbel...@gmail.com>
Subject Re: Resident size growth
Date Wed, 18 Apr 2012 18:18:47 GMT
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

Mime
View raw message