Re: lots of SocketFactory threads hanging out

the class has a simple equals() that tests that the classes are equal 
and hashCode() simply returns the
hashcode of the class name.








Peter Jones wrote:
> On Tue, Oct 07, 2008 at 03:33:46PM -0700, Mark Ackerman wrote:
>   
>> So as a followup to my last problem with intermittent connection
>> problems....
>>
>> doing a thread dump on our server I see a bunch of these:
>> RMI RenewClean-[155.83.200.144:2960,rma.rmi.server.LimitedPortServerSocketFactory@52a393bc]" daemon prio=10 tid=0x0054c400 nid=0x2cf in Object.wait() [0xd58ff000..0xd58ffbf0]
>>     
> [snip]
>   
>> Is this normal?
>>     
>
> In general, yes, although when client socket factories are in use (as
> is evidenced by the thread name above) there can be excessive creation
> of such threads if the socket factory classes do not have appropriate
> implementations of the Object.hashCode/equals methods.  Some
> background:
>
> http://archives.java.sun.com/cgi-bin/wa?A2=ind0611&L=RMI-USERS&P=1013
> http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=5053529
> http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4492317
>
>   
>> last part of the thread dump is:
>>     
> [snip]
>   
>> PSPermGen       total 20480K, used 20112K [0xd7c00000, 0xd9000000, 0xdbc00000)
>>  object space 20480K, 98% used [0xd7c00000,0xd8fa40d8,0xd9000000)
>>
>> So is it ok to have the PSPermGen object space at 98%?
>>     
>
> That doesn't look unusual to me.
>
> -- Peter
>
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