when you look at the source of jt400Native.jar you can see that it also calls the native srvpgm in /QSYS.LIB/QYJSPART.SRVPGM
so there is only a minimal java layer. there is no chance jdbc could get near this performance.
i hoped someone with deeper knowlege of the performance impacts of calling rpg from java via jni could help.
(mobil)
Am 10.04.2020 um 23:49:15 hat nli@xxxxxxxxxxxxxxxxx folgendes geschrieben:
From: nli@xxxxxxxxxxxxxxxxx
To: java400-l@xxxxxxxxxxxxxxxxxx
Cc: david@xxxxxxxxxxxx
Date: 10.04.2020, 23:49:15
Subject: Re: DataQueue performance jt400Native 10x slower then RPG
Maybe just for having the bigger picture: Have you tried you use a simple
select from the dataqueue service from jdbc:
Like:
Select * from table(qsys2.QSYS2.RECEIVE_DATA_QUEUE()...
The reason why I suggest that is that Db2 uses ILE under the covers (I
guess) to read the queue - and maybe that will give you the extra
performance ...
.. I am just guessing .... Just try to get your performance back with
straight jtOpen and JDBC
https://www.ibm.com/support/pages/node/1136812
On Fri, Apr 10, 2020 at 8:41 PM David Gibbs via JAVA400-L <
java400-l@xxxxxxxxxxxxxxxxxx> wrote:
> On 4/10/20 11:50 AM, Franz.Rauscher@xxxxxxxxxxx wrote:
> > On a Workstaion it performan much much mor worst
> >
> > But thats clear to me becuase all traffic goes over Network.
>
> Do you have any 3rd party security exit programs installed?
>
> In the past, I've seen performance issues with Java interactions when exit
> programs are involved.
>
> david
>
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