> Is that Casandra problem?
> I want Cassandra use memory more effective. How can I do that?
I definitely recommend Jonathan's link, but just to specifically
answer this: It's not a Cassandra issue, it's how the JVM will tend to
behave in particular with the CMS garbage collector. While under the
http://www.oracle.com/technetwork/java/javase/gc-tuning-6-140523.html
On Wed, Oct 27, 2010 at 9:30 PM, JKnight JKnight wrote:
> Could you tell me why Cassandra use memory more than needed?
>
>
> On Thu, Oct 28, 2010 at 9:15 AM, Nicholas Knight
> wrote:
>>
>> Presumably you're on a 32-bit archite
Cassandra needs all the RAM you can give it so it can cache things for optimum
performance. If you need it to use less, give it less.
-NK
On Oct 28, 2010, at 10:30 AM, JKnight JKnight wrote:
> Could you tell me why Cassandra use memory more than needed?
>
>
> On Thu, Oct 28, 2010 at 9:15 AM,
Could you tell me why Cassandra use memory more than needed?
On Thu, Oct 28, 2010 at 9:15 AM, Nicholas Knight wrote:
> Presumably you're on a 32-bit architecture (or at least a 32-bit JVM).
> 32-bit processes won't be able to address more than "X" amount of memory,
> where X would usually be >=
Presumably you're on a 32-bit architecture (or at least a 32-bit JVM). 32-bit
processes won't be able to address more than "X" amount of memory, where X
would usually be >= 2GB, and < 4GB.
The reason you can't use a full 4GB is that part of the address space is
necessarily reserved by the OS ke
Hi all,
When I config Maximum heap size -Xmx4G, the memory will consume to 3.5G.
When I call Perform GC (jconsole), the used memory reduce to 1G.
When I config Maximum heap size -Xmx2G, Cassandra system run well.
Is that Casandra problem?
I want Cassandra use memory more effective. How can I do
