Create performance tests in sirix-benchmarks using JMH

[JohannesLichtenberger]

Sadly there's no test suite for JSONiq, so we'd have to create tests on our own using synthetic JSON input and custom queries.

[SozeKeyzer]

I would like to work on this issue, can u help me how to get started.

[JohannesLichtenberger]

There are for instance two tests in JsonShredderTest, which should be in the sirix-benchmarks repository (testChicago and testChicagoDescendantAxis). They need a big JSON file I have locally but can not check in. You'd have to research best practices how/where to store these files (this file is 3,8Gb).

[V5t5d]

Hey! I'd like to join you on solving this problem. Do you need an assistance?

[JohannesLichtenberger]

I think you're good to go 👍

[JohannesLichtenberger]

@V5t5d ping

[Stredsto]

hey @JohannesLichtenberger, is this issue still open?

[JohannesLichtenberger]

Yes, still open

[Stredsto]

Thanks @JohannesLichtenberger, last time I was trying to work on an issue and couldn't get the project configured on my local correctly, let me do a fresh start and try to work upon this.

[Stredsto]

Hey @JohannesLichtenberger , I got the project running properly and I'm setting up JMH in the sirix-benchmarks module and planning to start with simple write and read performance tests. Let me know if you have any suggestions or specific requirements.

[JohannesLichtenberger]

Nothing specific, but what's most important is finishing the work in my branch update-slots-to-memorysegment, that is using off-heap memory and pre-allocated pages, which can be reused for loading from disk. What's missing is mainly to replace all node types usage of byte buffers... and instead use MemorySegments in the constructors...