Did you see the NullPointerException at all. I belive this will happen from
time to time with option A or B.
--jason
On Wed, 11 Jul 2001, Scott M Stark wrote:
> I have a fix for this problem that I am stress testing now. Commit
> option c is working fine with 20 threads and 10 iterations.
>
> ----- Original Message -----
> From: "Jason Dillon" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Tuesday, July 10, 2001 10:55 PM
> Subject: [JBoss-dev] more contention fluff
>
>
> > Well, I have not been able to track it down fully, but I modified the
> > locktest to be a bit more agressive. First I simply up'd the thread and
> > iteration count (which could cause a NullPointerException in the entity
> > syncrhonization interceptor... but not all the time). It will also hang
> > some times, and then sometimes it will just run fine.
> >
> > I was not sure if the commit-option had anything todo with it, so I
> expanded
> > the test to run over each commit option. With the thread count low (10 or
> > so), option a and b work, but when it comes to c it never makes it
> through,
> > the test just hangs. I have no idea what happens with option d.
> >
> > All the while it produces a lot (alot of transactional contention on
> > contextXXX) messages, which makes sence.
> >
> > I also changed the test to actually assert if the test failed.
> > Unfortunatly, the test will timeout and not be included in the report...
> not
> > really sure why that is, but it is.
> >
> > *sigh*
> >
> > I was hoping to reproduce what I am seeing with this test, but it has not
> > turned out that way. I can not even tune the test to fail each time... I
> > really need a drink. It does fail though... with a hang or null pointer.
> >
> > Anyways, I commented out the c & d tests for now since they cause the
> report
> > not to show up and I turned the thread count down to 10 and iter to 20.
> > Someone who knows a little more about the locking mechanism (marc?) might
> > want to play with this test a little to see where it hangs and where the
> > null is thrown.
> >
> > I ended up using the RMI IL for now, but I think that I still get a
> > contention/hang after a while =(
> >
> > --jason
> >
> >
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