Hi, let's vote on upgrading to Java version 11 for now, users can choose to use Java 17 at runtime if they want, this is not a blocker to upgrade the development to Java 11.
> On Feb 13, 2023, at 21:47, Sheng Wu <[email protected]> wrote: > > The reason I am asking about this is that JDK GC perf improvement > usually is relative to how you use memory. > OAP eating memory and have a high load for GC, I am thinking whether > it is meaningful for OAP + JDK17 runtime. > > Sheng Wu 吴晟 > Twitter, wusheng1108 > > kezhenxu94 <[email protected]> 于2023年2月13日周一 21:44写道： >> >> In terms of JDK performance improvements, I think it's usually >> about GC and the Java virtual machine itself, which means most (if not all) >> Java applications >> should benefit from, I believe OAP is not an exception 😂. >> >>> On Feb 13, 2023, at 21:38, Sheng Wu <[email protected]> wrote: >>> >>> About more aggressive, do we have any tests or do we have anyone to >>> run some perf. tests on JDK 17 as a comparison? >>> >>> Sheng Wu 吴晟 >>> Twitter, wusheng1108 >>> >>> 陆家靖 <[email protected]> 于2023年2月13日周一 21:35写道： >>>> >>>> +1 >>>> >>>> Shall we move directly to JDK17 as Spring Boot 3 has done? >>>> >>>> The overall performance in JDK17 is much better than the previous versions. >>>> And ZGC is production ready since JDK15. I suppose OAP would benefit from >>>> this. >>>> >>>> Regards, >>>> Jiajing >>>> >>>> Sheng Wu <[email protected]> 于2023年2月13日周一 21:27写道： >>>>> >>>>> Agree. With a server, we could upgrade to a newer version of JDK. >>>>> Let's see whether we could commit JDK 11 and JDK 17 compiling support, >>>>> and run in JDK 11 officially. >>>>> >>>>> Sheng Wu 吴晟 >>>>> Twitter, wusheng1108 >>>>> >>>>> kezhenxu94 <[email protected]> 于2023年2月13日周一 21:14写道： >>>>>> >>>>>> Hi all, recently I've merged a pull request[1] that migrates our tests >>>>>> in main repo >>>>>> from junit 4 to junit 5, I've also verified the tests passed in Java 11 >>>>>> and above, >>>>>> now, I'm proposing to upgrade the minimum required Java version, >>>>>> including >>>>>> development environment (JDK version), and runtime environment (JRE >>>>>> version) to Java 11. >>>>>> >>>>>> Java 8 is a popular version, there are a lot of projects still using it, >>>>>> but fact is fact, Java 8 is really old and there are lots of fascinating >>>>>> features >>>>>> in Java 11 that we will benefit in our development experience, there are >>>>>> also >>>>>> some performance improvements that we will benefit at runtime, so I >>>>>> would be >>>>>> really excited if we could bump up the Java version to Java 11. >>>>>> >>>>>> What do you think? If you have any concern, please reply here and we can >>>>>> discuss >>>>>> more before we make a decision, if you are excited too to upgrade the >>>>>> Java version, >>>>>> please vote here! >>>>>> >>>>>> [1] https://github.com/apache/skywalking/pull/10382 >>
