Re: DataQueue performance jt400Native 10x slower then RPG

What about if you call your class outside of pase?

On Fri, 10 Apr 2020, 17:10 , <[email protected]> wrote:

>
> i verified this.
>
> when i reduce the message size, the performance difference gets even worst.
>
>
> it seems that the api calls from pase are very slow
>
>
>
>
> (mobil)
>
>
>
>   Ursprüngliche Nachricht
>
>
> Von: [email protected]
> Gesendet: 10. April 2020 17:42
> An: [email protected]
> Antworten: [email protected]
> Betreff: Re: DataQueue performance jt400Native 10x slower then RPG
>
>
> Have you eliminated jvm startup time from that?
>
> Before you start writing the messages to the dataqueue output a log message
> and after you finish output a log message to confirm you are eliminating
> the overhead of jvm startup.
>
>
>
> On Fri, 10 Apr 2020, 16:35 , <[email protected]> wrote:
>
> > Hi!
> >
> > I have a performance problem with my IBM-i scenario.
> >
> > I have a RPG Client which writes messages to a dataquene. the messages
> are
> > about 9000bytes in size. i am writing 1024 messages.
> >
> > I have two server implementaions which run on the same IBMi machine one
> in
> > Java and one in RPG
> >
> > The java version takes about 150ms to read 1024 messges. The RPG version
> > only about 15ms. so the RPG version is 10 times faster.
> >
> > I verified that i user jt400Native and the AS400ImplNative and
> > BaseDataQueueImplNative is used so that the native API calls from
> JVM/Pase
> > are used.
> >
> > Both server implementations are running in al loop so that i can exlude
> > any startup perfomance impacts. The timings do not vary over time. RPG is
> > alwas 10x faster.
> >
> >
> > Why is the Java/Pase version so much slower??
> >
> > Greetings,
> > Franz
> >
> > My Environment is: Power S812 64GB RAM (1Core no VIOS). IBM-i 7.4 TR1.
> > There is no load on Server
> >
> >
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