looks doc is outdated :
$ grep '\.gcInterval'
./j2se/src/share/classes/sun/rmi/transport/ObjectTable.java
new GetLongAction("sun.rmi.dgc.server.gcInterval", 3600000));
On Mon, Oct 3, 2011 at 2:21 PM, Jonathan Ellis <jbel...@gmail.com> wrote:
> I would expect that client=nodetool and server=Cassandra. But sun's
> docs say that sun.rmi.dgc.server.gcInterval defaults to 60s which I am
> definitely NOT seeing.
>
> On Mon, Oct 3, 2011 at 4:12 PM, Yang <teddyyyy...@gmail.com> wrote:
>> the following source code in jdk , RMI part, forces a full gc every 1
>> hour , if no old gen gc has happened by then.
>>
>>
>>
>>
>> /** maximum interval between complete garbage collections of local heap */
>> private static final long gcInterval = // default 1 hour
>> AccessController.doPrivileged(
>> new GetLongAction("sun.rmi.dgc.client.gcInterval",
>> 3600000)).longValue();
>>
>>
>>
>> so if u have a large heap, and old gen gc does not happen frequently,
>> you need to set
>>
>> #sun.rmi.dgc.client.gcInterval
>> #sun.rmi.dgc.server.gcInterval
>>
>> to very high levels
>>
>
>
>
> --
> Jonathan Ellis
> Project Chair, Apache Cassandra
> co-founder of DataStax, the source for professional Cassandra support
> http://www.datastax.com
>
