Hi,
I have made some tests like yours (and some more advanced. I can send
the code on this mailing list if someone is interested in) and I think
there's no problem with GC on RMI and JEREMIE.
Those tests and your "Tester" shows that the truth is out there :-)
I said in my messages "OutOfMemoryError ..." on 28/Nov/2000 and
04/Dec/2000 that I think that JOnAS keeps a reference on all the Remote
Objects somewhere in the memory.
Garbage collection is OK for me but it can't make its job because all
the remote objects are still referenced.
--> No GC
--> No unexportObject
I think it is a major problem because today you can't rely JOnAS on a
production system.
I hope this problem will be soon fixed. I'm ready to contribute but I
don't really know what to do.
Regards.
Olivier HEDIN
Bruno Dumant wrote:
>
> Hi,
>
> I have made new tests of Jeremie to see if I could reproduce the
> memory leak, but I couldn't.
>
> The test is simple :
>
> // simplified client code
> Tester tester = (Tester) Naming.lookup("initial-server-name");
> while (true) {
> String new_name = tester.newName();
> tester = (Tester) Naming.lookup("initial-server-name");
> }
>
> // simplified server code
> class TesterImpl implements Tester {
> static int id = 0;
>
> String newName() {
> String oldname = "tester" + i;
> Naming.unbind(oldname);
> i++;
> String new_name = "tester" + i;
> Naming.rebind(new_name, this);
> return new_name;
> }
> }
>
> The client thus repeatedly invokes the server that calls the registry
> to add and remove objects. This test has been running all night
> without any problem. I have also tested a slightly different scenario
> in which a new TesterImpl object is put in the registry during each
> iteration, the old one being unexported (this scenario requires
> methods I have just added to Jeremie). It works equally well.
>
> This shows that the problem is not with the registry implementation,
> nor with a memory leak during Jeremie invocations. I can think of two
> other possibilities:
>
> * the problematic examples require distributed garbage collection,
> provided by RMI but not by Jeremie (and not by RMI/IIOP);
> * there is a memory leak in the transaction context transmission
> (not tested by the above example).
>
> That's all for now !
>
> Best regards,
>
> Bruno
>
>
> Philippe Coq wrote:
>
>> Joe Gittings wrote:
>> >
>> > Philippe,
>> >
>> > Thanks for this new release.
>> >
>> > Since I don't want to take credit for work I didn't do, I should
>> perhaps
>> > clarify: my contribution to security was identifying and proposing
>> fixes to
>> > a couple of bugs in the JRMI security implementation. I did not do
>> anything
>> > to extend security to work with RMI (although I guess the bugs
>> would have
>> > affected that too :).
>> >
>> > One question about 2.2.2: does it address the memory leakage
>> problems that
>> > various people (including myself) are experiencing with Jeremie
>> under
>> > 2.1.1?
>> >
>> > With thanks,
>> > Joe
>> >
>>
>> In fact, I must confess that I don't know exactly...
>> I was so involved in the release process of the version that
>> I have not tried to reproduce the "memory leakage problems with
>> Jeremie"
>> If somebody can easily reproduce it and tell us if the new version
>> of jonathan fix the bug it will be fine!
>> Best regards,
>>
>> --
>> Philippe
>>
>> Philippe Coq Evidian Phone: (33) 04 76 29 78 49
>> Bull S.A - 1 rue de Provence - 38432 Echirolles Cedex France
>> Download our EJBServer at http://www.objectweb.org
>> ----
>> To unsubscribe, send email to [EMAIL PROTECTED] and
>> include in the body of the message "unsubscribe jonas-users".
>> For general help, send email to [EMAIL PROTECTED] and
>> include in the body of the message "help".
>
> --
> *******************************************************************
> Bruno Dumant
> DTL/ASR
> france telecom R&D
> 38-40 rue du général Leclerc
> 92794 Issy Moulineaux Cedex 9
> FRANCE
>
> mailto:[EMAIL PROTECTED]
> tel: +33 1 45 29 46 03
> fax: +33 1 45 29 66 04
> *******************************************************************
>
----
To unsubscribe, send email to [EMAIL PROTECTED] and
include in the body of the message "unsubscribe jonas-users".
For general help, send email to [EMAIL PROTECTED] and
include in the body of the message "help".
