We tried Jeremie as well. The problem is that Jeremie speeds up, but still it is so
slow that I cannot believe that there is no bug. With RMI we have a rate
of 45 method calls per second. With Jeremie, there are about 70. This is near to 200%,
but still this is quite slow. I think there is either a bug in JOnAS
(can someone give me a tip where to look in the code?) or I have done something wrong.
Maybe I have to register the entity bean as a reference to the session
bean or something, so that JOnAS knows that both are located in the same VM?
>
> Maybe you should try Jeremie instead of RMI, since you only have local
>communications.
>
> Bruno
>
> [EMAIL PROTECTED] wrote:
>
> > Hello JOnAS users,
> >
> > I have some trouble with performance, maybe you can give me some tips. I did the
>following:
> >
> > Standalone Client Software that uses implicit transaction control (no user
>transactions).
> > Stateful Session Bean that has a method doSomething. This method is marked as
>"RequiresNew". This method does a findByPrimaryKey on an EntityBean, then >
does
> > four different getXXX calls against the found instance, each delivering simple
>types as double, int, or a small String (50 characters). Then it packs >
this
> > data together in a flat object (Value Object) to return this data as the method's
>result.
> >
> > This should perform very fast, as we have no direct communication between client
>and entity bean, and transaction is controlled by server to start TX >
when
> > method is called, and to commit TX when method is through.
> >
> > But it ain't performing well. With client and servers (JOnAS, Sybase SQL Anywhere
>7) on the same machine, running RMI, we only get a throughput of 34 >
method
> > calls per second. The database table only holds three records and the primary key
>class is correctly set to match the table's PK, and there is an index >
on
> > that table's PK.
> >
> > When we comment out the findByPrimaryKey and getXXX, so that the method is a dummy
>only, we get about 600 method calls per second (including TX begin and
> > commit).
> >
> > When we only do the findByPrimaryKey, and comment out the getXXX methods, we have
>only 45 method calls per second. So it seems that the finder needs lot
> of
> > time, even if the data is not changed and JOnAS should be able to find the bean in
>memory.
> >
> > Can anyone give us some hint what we can improve? It's really a simple, small,
>tiny example that we run, no heavy load, no big data, no lots of data. It
> > cannot be true that on a P-III 450 we only can get 31 method calls per second...?!
> >
> > Thank you for every tip!
> >
> > Markus
>
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
bruno.dumant.vcf
