- java-devroom - lists.fosdem.org

[Proposal] An introduction to Middleware Application Monitoring with Java Mission Control and Flight Recorder
by Mario Torre 28 Nov '18

28 Nov '18

Title: An introduction to Middleware Application Monitoring with Java Mission Control and Flight Recorder Abstract: Recently Open Sourced, Java Mission Control is the industry standard tool for Java performance analysis. This presentation will introduce to tool and highlight some of the important progress made by the community since the project started and ideas we are exploring for the future. We will discuss how application developers can extend their applications to take advantage of the event tracing capabilities of Flight Recorder, now included in OpenJDK 11, and how to create custom tools based on the extensive Mission Control API to analyse specific issues beyond what is offered by default by the Eclipse based tool with very minimal overhead. Speakers: Mario Torre Marcus Hirt Cheers, Mario -- pgp key: http://subkeys.pgp.net/ PGP Key ID: 80F240CF Fingerprint: BA39 9666 94EC 8B73 27FA FC7C 4086 63E3 80F2 40CF Java Champion - Blog: http://neugens.wordpress.com - Twitter: @neugens Proud GNU Classpath developer: http://www.classpath.org/ OpenJDK: http://openjdk.java.net/projects/caciocavallo/ Please, support open standards: http://endsoftpatents.org/

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Talk Proposal: Project Loom
by Ron Pressler 26 Nov '18

26 Nov '18

Hi. I propose the following talk for the Free Java Developer Room at FOSDEM 2019. Title: Project Loom: Weaving executions Abstract: OpenJDK’s Project Loom's mission is to make it easier to write, debug, profile and maintain concurrent applications under heavy load. Threads are a natural and convenient concurrency construct which is being supplanted by less convenient, asynchronous abstractions because threads' implementation in the OS kernel is insufficient for meeting performance demands, and are wasteful in computing resources. Project Loom will introduce fibers as lightweight, efficient threads, managed by the Java runtime, that let developers use the same simple abstraction but with significantly better performance and lower footprint. Fibers are implemented in the JDK libraries on top of multi-prompt, stackful delimited continuations in the JVM. This session will present the current status and challenges of the project -- both of implementation and design -- one year into the project. Bio: Ron Pressler is the tech lead for OpenJDK's Project Loom. Before coming to Oracle, he led the development of Quasar, an open-source Java fibers library. Microblog: https://twitter.com/pressron Blog: https://pron.github.io/ Recording: Fine Ron

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FOSDEM 2019 Free Java Dev Room Call For Participation
by Mario Torre 20 Nov '18

20 Nov '18

We are pleased to announce the Call for Participation in the FOSDEM 2019 Free Java DevRoom! This year FOSDEM Free Java DevRoom will be on Saturday the 2nd of February 2019 in Bruxelles, Belgium, with the usual events and meetings surrounding the main show on Friday, Saturday and Sunday on that weekend; please, refer to the FOSDEM website for the schedule of the whole event: https://fosdem.org/ The Free Java DevRoom has become unique in that it has attracted hackers from very different Free Software Java projects, giving the opportunity to bring together companies of various sizes, different project communities, mainstream core Java developers, alternative Java language implementations and runtimes, and everything that form the Free Java Universe, everybody participating to share their knowledge in an atmosphere of cooperation and friendly competition. The Java Community has never been more vibrant than now, and it's moving faster and is more modular than ever: a real "Duke McRelease and the Alien Mindbenders" and back together into a perfect picture! Those are indeed very exciting times, and we are all part of it! So, come and share your experiences at the Java Dev Room at FOSDEM! As always, check out our wiki for more details on the conference: https://wiki.debian.org/Java/DevJam/2019/Fosdem And join the Free Java DevoRoom mailing list [java-devroom at lists.fosdem.org] https://lists.fosdem.org/listinfo/java-devroom *** IMPORTANT *** Fosdem organisers have expressed the desire to record and stream everything, and like every year we will do our best to record the sessions by default. We will use the same format as last year, so please submit one (or more) 25 minute talk proposal(s) by the 1st of December 2018, 23.59 CET on the mailing list. We may also select a small number of 45 minutes talk. If you wish to submit a 45 minutes talk please state this in the proposal, all proposals will be considered to be of 25 minute by default otherwise. A template for submitting a talk can be found at: http://wiki.debian.org/Java/DevJam/2019/Fosdem/CallForParticipation Tracks will be announced around the 5th of December on the mailing list. Please join us! --The Free Java DevRoom Committee -- pgp key: http://subkeys.pgp.net/ PGP Key ID: 80F240CF Fingerprint: BA39 9666 94EC 8B73 27FA FC7C 4086 63E3 80F2 40CF Java Champion - Blog: http://neugens.wordpress.com - Twitter: @neugens Proud GNU Classpath developer: http://www.classpath.org/ OpenJDK: http://openjdk.java.net/projects/caciocavallo/ Please, support open standards: http://endsoftpatents.org/

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Talk Proposal: Performance tuning Twitter services with Graal and Machine Learning
by Christian Thalinger 06 Nov '18

06 Nov '18

Title: Performance tuning Twitter services with Graal and Machine Learning Abstract: Running Twitter services on Graal has been very successful and saved Twitter a lot of money on datacenter cost. But we would like to run more efficient to reduce cost even more. I mean, who doesn’t? In order to do this we are using our Machine Learning framework called Autotune to tune Graal inlining parameters. This talk will show how much performance improvement we got by autotuning Graal. Recording: OK Bio: Chris Thalinger is a software engineer working on Java Virtual Machines for over 14 years. His main expertise is in compiler technology with Just-In-Time compilation in particular. Initially being involved with the CACAO and GNU Classpath projects, the focus shifted to OpenJDK as soon as Sun made the JDK open-source. Ever since Chris has worked on the HotSpot JVM at Sun, Oracle and now at Twitter. Microblog URL: https://twitter.com/christhalinger <https://twitter.com/christhalinger>

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Talk proposal
by Nicolas Frankel 06 Nov '18

06 Nov '18

Hello everyone, Here a talk proposal for FOSDEM: Title: Securing the JVM, neither for fun nor for profit, but do you really have a choice? Abstract: Consider a Java application in a private banking system. A new network administrator is hired, and while going around, he notices that the app is making network calls to an unknown external endpoint. After some investigation, it’s found that this app has been sending for years confidential data to a competitor (or a state, or hackers, whatever). This is awkward. Especially since it could have been avoided. Code reviews are good to improve the hardening of an application, but what if the malicious code was planted purposely? Some code buried in a commit could extract code from binary content, compile it on the fly, and then execute the code in the same JVM run… By default, the JVM is not secured! Securing the JVM for a non-trivial application is complex and time-consuming but the risks of not securing it could be disastrous. In this talk, I’ll show some of the things you could do in an unsecured JVM. I’ll also explain the basics of securing it, and finally demo a working process on how to do it. Note for the organizers: The Security Manager is ages old, but interestingly enough, every time I gave this talk, nearly 95% of the room didn't know about it. Since running an unsecured JVM is very risky, I believe a lot of people can benefit from that talk. Recording: Acceptable under the license proposed Bio: After 15+ years experience consulting for many different customers, in a wide range of contexts (such as telecoms, banking, insurances, large retail and public sector), recently turned coat to a Developer Advocacy career path. Usually working on Java/Java EE and Spring technologies, but with specific interests like Kotlin, Software Quality, Build Processes and Rich Internet Applications. Currently working for Exoscale. Also double as a teacher in universities and higher education schools, a trainer and triples as a book author. Microblog: https://twitter.com/nicolas_frankel Blog: https://blog.frankel.ch/

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25 minutes talk idea Free Java Developer Room at FOSDEM 2019
by Alex Dettinger 02 Nov '18

02 Nov '18

Hi, Please find below a submission for a talk. Title: Apache Camel and the mind-bender integration scenarios Abstract: Apache Camel is an open source framework leveraging the power of Java to face integration challenges. Enterprise Integration Patterns could be combined with a multitude of data sources and destinations via a Domain Specific Language. This powerful association often results into simple solutions to common problems. However, in this episode, tricky integration scenarios are trying to turn our mind upside down. Fortunately, The Cameleers, an ancient developer community, have left a defense mechanism called bean binding. We just need to reassemble few concepts and run some examples. Attendees to this presentation could expect to be presented a quick overview of Apache Camel. A bit deeper, the audience would learn how and when to use custom Java code from a camel route. Recording me on audio and/or video: Acceptable under a CC-BY-2.0 license (DEFAULT) Me: I'm just a Java developer using Apache Camel in enterprise context since a decade. On my free time, I'm also committer on Apache Camel. https://github.com/aldettinger Many thanks, Alex

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Talk proposal: IcedWeb - the future of past applications
by Jiri Vanek 31 Oct '18

31 Oct '18

Title: IcedWeb - the future of past applications IcedTea-Web is open Implementation of javaws. It was never fully compatible with specification, but we did our best, and keep trying to satisfy reported unimplemented parts. Recently ITW crossed several borders - support for Windows and support for OpenjdDK 11. With death of plugin also portable builds whic are known to run on Mac. With plugin deprecated long ago and javaws abandoned in Oracle JDK11, IcedTea-Web may be the only chance for many legacy applications. Lets summary current state J. -- Jiri Vanek Senior QE engineer, OpenJDK QE lead, Mgr. Red Hat Czech jvanek(a)redhat.com M: +420775390109

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Talk Proposal: AdoptOpenJDK.net - Collaborative Infrastructure as Code and build farm for OpenJDK
by Martijn Verburg 31 Oct '18

31 Oct '18

*Title:* AdoptOpenJDK.net - Collaborative Infrastructure as Code and Build Farm for OpenJDK *Abstract:* AdoptOpenJDK.net is a new community, infrastructure as code project and a build farm for OpenJDK. AdoptOpenJDK came about following a discussion about the general lack of an open and reproducible build & test system for the OpenJDK source across multiple platforms. The intention is to provide binaries and hardware access for all of the major platforms, for the purposes of: * Allowing end users to have a reliable source of OpenJDK binaries for all platforms. * Research and Development by OpenJDK developers, academics and researchers. * An open, common, audited, build infrastructure for vendors to use (if they wish). * Providing a place to try out build infrastructure ideas that might one day be re-implemented in the OpenJDK project. This talk will give you a tour of AdoptOpenJDK (code, infrastructure and major achievements to date) as well as an open discussion on how the community can best utilize its resources. *Bio:* Martijn Verburg is the CEO of jClarity, leader of the London Java Community, a Java Champion and member of the Adoption Group in OpenJDK. He is one of the co-founders of AdoptOpenJDK and works on other Java / OSS bodies such as the JCP and JakartaEE. Cheers, Martijn

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Talk proposal: Java Security Animated
by Martin Toshev 30 Oct '18

30 Oct '18

Title: Java Security Animated Abstract: Security concepts incorporated in the Java platform and major frameworks like Spring, Java EE and OSGi are typically difficult to grasp and understand in depth. The same applies for Java concurrency utilities and a tool called Java Concurrent Animated was created to address this issue a few years back. Following its trail a similar tool called Java Security Animated is aiming to lower the entry barrier to security portfolio of the Java platform. Using the tool we will have a short journey in the security world of the Java platform. Bio: Martin is an IT consultant, Java enthusiast and has been heavily involved in the activities of the Bulgarian Java User group (BG JUG) where he is a board member. His areas of interest include the wide range of Java-related technologies (such as Servlets, JSP, JAXB, JAXP, JMS, JMX, JAX-RS, JAX-WS, Hibernate and Spring Framework. At present he is an architect for Resolve Systems.

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Talk Proposal: Rumble in the Java Jungle
by Volker Simonis 30 Oct '18

30 Oct '18

Title: Rumble in the Java Jungle Abstract: OracleJDK, OpenJDK, AdoptOpenJDK, OpenJ9, Zulu, IcedTea, Liberica, SapMachine, GraalVM, SubstrateVM. 8, 9, 10, 11, 12, 18.3, 18.9, short-term, mid-term, long-term support release, security updates. GPLv2, Classpath Exception, Oracle Binary Code License, Technology Network License Agreement. Field of use restriction, private and commercial use, reference implementation, substantially derived, TCK/JCK, Oracle Contribution Agreement, OpenJDK Community TCK License Agreement (OCTLA), Java Community Process (JCP), Java Specification Request (JSR), Java Enhancement Proposal (JEP), Preview Features, Incubator Modules, Java (TM), Java SE compatibility, OpenJDK trademark notice. Confused? Come and hear from Java and OpenJDK veteran Volker Simonis how the Java world has been radically turned inside out in the last year and how this impacts you as a Java user or developer. After the talk you'll have a clear understanding what's going on in the Java ecosystem and you'll be ready to plan your or your companies future Java strategy. Recording me on video and/or audio under CC-BY-2.0 license is OK. Bio: Volker Simonis works in the SAP JVM Technology group. He is an OpenJDK contributor from the very beginning and helped SAP to engage in the OpenJDK project. He's the project lead of the OpenJDK PowerPC/AIX and s390x porting projects, a JDK reviewer and JCP Executive Committee representative for SAP. He also serves as a member of the JSR 379, 383, 384 and 386 (Java SE 9-12) Expert Groups.

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