btw the first code snippet is from openjdk 7
On Mon, Oct 3, 2011 at 2:29 PM, Yang <teddyyyy...@gmail.com> wrote:
> looks doc is outdated :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
>>
>
