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From JKnight JKnight <beukni...@gmail.com>
Subject Re: Cassandra consume large memory
Date Mon, 18 Jul 2011 15:27:10 GMT
Thank for your response.

Can we reduce that value? Memory is used just 600M but the process occupy
3.2G. Too waste.


On Mon, Jul 18, 2011 at 6:53 PM, Jonathan Ellis <jbellis@gmail.com> wrote:

> 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
>



-- 
Best regards,
JKnight

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