> We need more help than this to be of any use. Start with
> a sample unit test that exhibits the problem and submit it
> to sourceforge as a bug.
>
[Schouten, Andreas]
Thats seems not to be possible, because the bug depends on something
special in our environment. Anyway it's a bug in jboss, because the
container should at least throw an exception, if it fails creating an
instance of a bean.
I made tests with SFSB's which access data thrue entity beans. In a
client loop I created 10,000 SFSB , hold 1,200 ejb handles in a hashmap and
removed the oldest. The result was positive. The response time is determined
by the database, the cpu usage low and the memory usage stable.
Then I made tests with my second type of SFSB. It's used to manage
asynchronous processes. The client creates an instance and store the ejb
handle, later it posts a jms message with the handle and parameters to a
MDB. The MDB call a start method on the process bean.
I created 1,200 instances and post all of them. The first 10 are
processed correct but then the creation of new SFSB's stucks for all types
of beans.
I assume, that the communication with a CORBA server cause the
problemes. But there are no exceptions in any logfile on the jBoss nor on
the CORBA side.
I fear I need to debug the interceptors by myself, because You won't
have a way to reproduce to situation.
In which interceptor is a wait for a recource or a lock? Because the
transaction times out, no exception occur and cpu usage did not increase, it
must be a sleep. We need to know te excact point where it hangs.
I appricate all hints which let me less fishing to trouble water.
Andreas
P.S.: I checked also jBoss 2.4.4 /Catalina without success.
PP.S. : For entity beans, which are accessed by all types of SFSB's
we use the 'multy instance' interceptors. I don't think that there a
correlation to the problem, but just wan't notice this, because it's not the
standart configuration.
> -----Original Message-----
> From: Scott M Stark [SMTP:[EMAIL PROTECTED]]
> Sent: 29 November 2001 23:32
> To: [EMAIL PROTECTED]
> Subject: Re: [JBoss-dev] jBoss bug with SFLB
>
> We need more help than this to be of any use. Start with
> a sample unit test that exhibits the problem and submit it
> to sourceforge as a bug.
>
> xxxxxxxxxxxxxxxxxxxxxxxx
> Scott Stark
> Chief Technology Officer
> JBoss Group, LLC
> xxxxxxxxxxxxxxxxxxxxxxxx
> ----- Original Message -----
> From: "Schouten, Andreas" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Thursday, November 29, 2001 7:22 AM
> Subject: [JBoss-dev] jBoss bug with SFLB
>
>
> > Hi,
> >
> > JBoss runs frequently but in random situations in a bug and I need help
> > finding the exact point where it fails.
> >
> > The application runs a while with good performance and creates and
> removes
> > between 180 and 300 SFSB's.
> > Then without a exception the creation of SFSB fails. I got the home
> > interface and call the create method but setSessionContext and ejbCreate
> are
> > not called on the bean instance. The create method doesn't return and
> after
> > some minutes the transaction times out.
> > EJB calls whithout creation of an SFSB still work fine.
> >
> > What are possible reasons for this? Wy may can't the container create
> new
> > instances of SFSB?
> >
> > The number of actually instatiated SFSB's is lower then 25! The JVM uses
> > only 10% of its max memory.
> > We use jBoss 2.4.3 with Jetty. Sun jdk 1.3.1 on NT and blackdow jdk
> 1.3.3
> on
> > linux 2.4.8.
> >
> > Andreas
> >
> >
> >
> >
> >
> > If you have received this e-mail in error or wish to read our e-mail
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> >
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