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From King JKing <beuk...@gmail.com>
Subject Re: Cassandra 082 - Large swap memory
Date Fri, 26 Aug 2011 04:42:47 GMT
Dear Jonathan,

Cassandra process has 63.5 GB virtual size.
I mention about RES column in top. RES is 8.3G. Very large than 2.5G Used
Memory Used show in JConsole.

On Fri, Aug 26, 2011 at 11:04 AM, Jonathan Ellis <jbellis@gmail.com> wrote:

> Sounds like http://wiki.apache.org/cassandra/FAQ#mmap
>
> On Thu, Aug 25, 2011 at 10:36 PM, King JKing <beuking@gmail.com> wrote:
> > Dear all,
> > My Cassandra 082 server had very large swap memory.
> > JConsole show memory used just 2.9GB. But htop (top) show Cassandra
> process
> > take 8700MB.
> > Here is my config:
> > MAX_HEAP_SIZE="6G"
> > HEAP_NEWSIZE="400M"
> > JVM_OPTS="$JVM_OPTS -XX:+UseParNewGC"
> > JVM_OPTS="$JVM_OPTS -XX:+UseConcMarkSweepGC"
> > JVM_OPTS="$JVM_OPTS -XX:+CMSParallelRemarkEnabled"
> > JVM_OPTS="$JVM_OPTS -XX:SurvivorRatio=8"
> > JVM_OPTS="$JVM_OPTS -XX:MaxTenuringThreshold=2"
> > JVM_OPTS="$JVM_OPTS -XX:CMSInitiatingOccupancyFraction=75"
> > JVM_OPTS="$JVM_OPTS -XX:+UseCMSInitiatingOccupancyOnly"
> > JConsole also show Memory Pool "Par Survivor Space" always full
> (41MB/50MB)
> > and never reduce.
> > Could you help me?
> > Thank a lot for support.
>
>
>
> --
> Jonathan Ellis
> Project Chair, Apache Cassandra
> co-founder of DataStax, the source for professional Cassandra support
> http://www.datastax.com
>

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