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GraalVM is truly great stuff. GraalVM native compilation helps Java in the data center to avoid being a cost sink and to reduce start-up latency. Oracle needs

by w10-1 4y ago

GraalVM is truly great stuff. GraalVM native compilation helps Java in the data center to avoid being a cost sink and to reduce start-up latency. Oracle needs Java to sell enterprise software. Oracle contributing to OpenJDK may be required for Amazon cooperation (since Amazon is pushing its own JDK build) and probably helps the library ecosystem work towards native compatibility. Native support for reflection (used in many libraries) requires "reachability metadata", maps of reflective API usage, at build time. Anyone can do it, but enterprise requires authoritative sources. Until authoritative reachability metadata covers the transitive graph of library+version dependencies in enterprise software, GraalVM native AOT builds are a PITA. - https://github.com/oracle/graalvm-reachability-metadata https://github.com/oracle/graalvm-reachability-metadata - latest release: https://medium.com/graalvm/graalvm-22-3-is-here-jdk-19-builds-jlink-support-new-monitoring-features-and-more-f6e2b2eeff95 https://medium.com/graalvm/graalvm-22-3-is-here-jdk-19-build... - graalvm "community" roadmap: https://github.com/orgs/oracle/projects/6 https://github.com/orgs/oracle/projects/6 (As a side note: Mark Reinhold has run the JDK team since 1997: is there any comparable example of such stellar leadership for broadly-adopted software across multiple technical and organizational eras?)

whartung 4y ago
Java has been on a freight train run for the past 5 years. It is exhausting to keep up with. From the demonic release pace, to the dramatic changes to the platform, it's been a rough ride for some. But at the same time, it's also smooth sailing, and it's getting better all the time. It's still Java, for a bazillion applications it still "Just Works". It's still (IMHO) far more manageable and stable than many other platforms. I think the combination of Oracle and the entire community around it have been marshaling it really well with little drama. Change, sure. But not Drama. The Enterprise Edition departure was a big deal, but even that transitioned pretty well. That was no small task, and I think the vendors and framework folks have been handling that pretty well. GraalVM is just another step forward for the entire community, and it is kind of Oracle (however motivated) to release it. In truth, I think, overall, Java has been mostly (mostly) Oracle free, despite their monster investments into the technology and community. They could have been a much less benevolent dictator.
mapme 4y ago
Does graal native perform better than a non-native running with JIT compilation?
- kaba0 4y ago
  In certain cases it may, but generally the JIT compiled version will perform better on most workloads (but that can also use Graal)
- heretoo 4y ago
  Not in the community edition, but the enterprise edition appears to be quicker than JIT because of profile guided optimisations.
- Twirrim 4y ago
  if it's "long" running, you want the full JIT experience, because you essentially lose the entire "But how does my code actually run" optimisations that the JIT can do, and only have stuff that can be done ahead of time.

by w10-1 4y ago

whartung 4y ago

Java has been on a freight train run for the past 5 years. It is exhausting to keep up with. From the demonic release pace, to the dramatic changes to the platform, it's been a rough ride for some. But at the same time, it's also smooth sailing, and it's getting better all the time. It's still Java, for a bazillion applications it still "Just Works". It's still (IMHO) far more manageable and stable than many other platforms. I think the combination of Oracle and the entire community around it have been marshaling it really well with little drama. Change, sure. But not Drama. The Enterprise Edition departure was a big deal, but even that transitioned pretty well. That was no small task, and I think the vendors and framework folks have been handling that pretty well. GraalVM is just another step forward for the entire community, and it is kind of Oracle (however motivated) to release it. In truth, I think, overall, Java has been mostly (mostly) Oracle free, despite their monster investments into the technology and community. They could have been a much less benevolent dictator.

mapme 4y ago

Does graal native perform better than a non-native running with JIT compilation?

kaba0 4y ago
In certain cases it may, but generally the JIT compiled version will perform better on most workloads (but that can also use Graal)
heretoo 4y ago
Not in the community edition, but the enterprise edition appears to be quicker than JIT because of profile guided optimisations.
Twirrim 4y ago
if it's "long" running, you want the full JIT experience, because you essentially lose the entire "But how does my code actually run" optimisations that the JIT can do, and only have stuff that can be done ahead of time.