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RPG is the original native language for the I, and will probably outperform any other language.
There have been several performance papers written on this, one of which below.
https://search400.techtarget.com/tip/Database-performance-comparisons-on-IBM-i
Paul
-----Original Message-----
From: JAVA400-L <java400-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Franz.Rauscher@xxxxxxxxxxx
Sent: Friday, April 10, 2020 11:35 AM
To: java400-l@xxxxxxxxxxxxxxxxxx
Subject: DataQueue performance jt400Native 10x slower then RPG
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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