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From Jonathan Ellis <jbel...@gmail.com>
Subject Re: Cassandra consume large memory
Date Mon, 18 Jul 2011 11:53:00 GMT
That means that the mmaped files are indeed resident at the moment.

On Mon, Jul 18, 2011 at 1:51 AM, JKnight JKnight <beuknight@gmail.com> wrote:
> Thank for your response.
> Do you talk about virtual memory (column VIRT show in top command)?
> But I mention about column RES. In my case, VIRT is 61.8G, RES is 3.2G and
> SHR is 1.2G.
> JMX show Memory Usage:
> Used : 600MB, Commit 2.1G, Max: 2.1G
> On Mon, Jul 18, 2011 at 11:59 AM, Jonathan Ellis <jbellis@gmail.com> wrote:
>>
>> http://wiki.apache.org/cassandra/FAQ#mmap
>>
>> On Sun, Jul 17, 2011 at 11:54 PM, JKnight JKnight <beuknight@gmail.com>
>> wrote:
>> > Dear all,
>> > I use JMX to monitor Cassandra server.
>> > Heap Memory Usage show:
>> > Used : 600MB, Commit 2.1G, Max: 2.1G
>> > But htop show Cassandra process consume 3.1G.
>> > Could you tell me why Cassandra occupy memory very large than in used?
>> > Thank a lot for support.
>> > --
>> > Best regards,
>> > JKnight
>> >
>>
>>
>>
>> --
>> Jonathan Ellis
>> Project Chair, Apache Cassandra
>> co-founder of DataStax, the source for professional Cassandra support
>> http://www.datastax.com
>
>
>
> --
> Best regards,
> JKnight
>



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

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