cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Maciej Miklas <>
Subject Cassandra 1.x and proper JNA setup
Date Tue, 01 Nov 2011 09:15:27 GMT
Hi all,

is there any documentation about proper JNA configuration?

I do not understand few things:

1) Does JNA use JVM heap settings?

2) Do I need to decrease max heap size while using JNA?

3) How do I limit RAM allocated by JNA?

4) Where can I see / monitor row cache size?

5) I've configured JNA just for test on my dev computer and so far
I've noticed serious performance issues (high cpu usage on heavy write
load), so I must be doing something wrong.... I've just copied JNA
jars into Cassandra/lib, without installing any native libs. This
should not work at all, right?


View raw message