GraalVM in JVM mode is still Hotspot with the GraalVM JIT compiler. I would say that you should run some performance tests before doing the switch. In same workloads Graal JIT compiler performs better, some other cases Hotspot JIT compiler is better.
> On 13 Nov 2019, at 15:14, Richard Monson-Haefel <monsonhae...@gmail.com> > wrote: > > Thanks, Roberto! So, compiling with it is probably not going to be a > priority, but running TomEE on it could be. I wonder if the > performance advantages of using GraalVM over JVM is significant. > > On Wed, Nov 13, 2019 at 8:46 AM Roberto Cortez <radcor...@yahoo.com.invalid> > wrote: > >> Hi, >> >> Let me clarify that this repo: >> https://github.com/tomitribe/graalvm-microprofile < >> https://github.com/tomitribe/graalvm-microprofile> >> >> Is just to play around with the polyglot features of GraalVM. >> >> Building TomEE native images will be another story. I did try that when I >> was playing with the other repo and there are a lot of things that fail. >> This is not only about TomEE, but also about all the libraries used in >> TomEE itself. >> >> To be able to build to native image, you would need to comply with >> Substrate VM limitations stated here: >> https://github.com/oracle/graal/blob/master/substratevm/LIMITATIONS.md < >> https://github.com/oracle/graal/blob/master/substratevm/LIMITATIONS.md> >> >> For instance, projects like Quarkus or Micronaut removed all reflection >> calls and resolve these at compile time rather than runtime. While it is >> possible to instruct GraalVM about some reflection usage when doing the >> native image, I believe it won’t be enough in TomEE case and most likely >> some portions would need to be reimplemented. I have no idea what would be >> the effort involved in a task like this. It is not trivial. >> >> Cheers, >> Roberto >> >>> On 13 Nov 2019, at 12:55, Richard Monson-Haefel <monsonhae...@gmail.com> >> wrote: >>> >>> Hi! >>> >>> That would be cool. If memory serves there may be some issues with >>> reflection and complication but running TomEE on GraalVM should work >> since >>> it won't try to compile the reflection stuff. I haven't run it on >> GraalVM >>> myself, but this would be a really cool effort and if you can get it to >>> work it would be an awesome addition to the project in my opinion. Are >> you >>> interested in testing it out and working on it? >>> >>> Richard >>> >>> On Wed, Nov 13, 2019 at 5:35 AM COURTAULT Francois < >>> francois.courta...@thalesgroup.com> wrote: >>> >>>> Hello everyone, >>>> >>>> I am able to see some initiatives around GraalVM native-image like >>>> Quarkus, Helidon,... >>>> I have also seen that Tomcat 9.0.26 could be built as a native image: >>>> http://tomcat.apache.org/tomcat-9.0-doc/graal.html >>>> >>>> Digging on the web, I discover some work on TomEE side as well: >>>> https://github.com/tomitribe/graalvm-microprofile >>>> >>>> Are you working on a TomEE version which can be built as a GraalVM >> native >>>> image ? >>>> I think it should be a quite important topic to consider in the roadmap, >>>> right ? >>>> >>>> Best Regards. >>>> >>>> >>>> >>>> ________________________________ >>>> This message and any attachments are intended solely for the addressees >>>> and may contain confidential information. Any unauthorized use or >>>> disclosure, either whole or partial, is prohibited. >>>> E-mails are susceptible to alteration. Our company shall not be liable >> for >>>> the message if altered, changed or falsified. If you are not the >> intended >>>> recipient of this message, please delete it and notify the sender. >>>> Although all reasonable efforts have been made to keep this transmission >>>> free from viruses, the sender will not be liable for damages caused by a >>>> transmitted virus. >>>> >>> >>> >>> -- >>> Richard Monson-Haefel >>> https://twitter.com/rmonson >>> https://www.linkedin.com/in/monsonhaefel/ >> >> > > -- > Richard Monson-Haefel > https://twitter.com/rmonson > https://www.linkedin.com/in/monsonhaefel/
