====== OpenJ9 OpenJDK ======
  * [[https://www.eclipse.org/openj9/|OpenJ9]] IBM, Eclipse 재단의 [[java:openjdk|OpenJDK]]용 JVM
  * [[java:adoptopenjdk|AdoptOpenJdk]]를 통해 배포된다.
  * [[https://www.eclipse.org/openj9/oj9_faq.html|OpenJ9 - FAQ]]
  * [[https://www.eclipse.org/openj9/oj9_performance.html|OpenJ9 - Performance]]
  * [[https://en.wikipedia.org/wiki/OpenJ9|OpenJ9 - Wikipedia]]
  * OpenJ9 는 JDK가 아니라 HotSpot을 대체하는 JVM이다. 
  * JDK는 [[java:openjdk|OpenJDK]]로 개발하고 컴파일하고, 그 결과 나온 바이너리를 실행/운영하는 환경.
  * 즉, [[java:openjdk|OpenJDK]] 는 HotSpot과 OpenJ9 두가지 이상의 JVM을 가진 것이다.
  * Memory 효율은 OpenJ9가 좋고, CPU 효율은 HotSpot이 좋다고 평가됨.

===== 참고 =====
  * [[https://royvanrijn.com/blog/2018/05/openj9-jvm-shootout/|Part 1: OpenJ9 versus HotSpot]]
  * [[https://royvanrijn.com/blog/2018/05/openj9-hotsport-specjvm2008/|Part 2: OpenJ9 versus HotSpot]]
  * [[https://developer.ibm.com/videos/introduction-to-eclipse-openj9-and-adoptopenjdknet/|OpenJDK with Eclipse OpenJ9: give your Java applications a thrill! – IBM Developer]]
  * [[https://www.youtube.com/watch?v=srfR38j2CFc|OpenJDK with Eclipse OpenJ9: give your Java applications a thrill ! - YouTube]]
  * [[https://www.youtube.com/watch?v=W4eL95QrAe0|Introducing OpenJ9 - Eclipse's new Java VM (sponsored by IBM) - YouTube]]
  * [[https://dzone.com/articles/free-fast-open-production-proven-and-all-java-open|Free, Fast, Open, Production-Proven, and All Java: OpenJ9 - DZone Java]]
  * [[https://www.infoq.com/news/2017/10/javaone-community-keynote|JavaOne Keynote: IBM on OpenJ9 and Open Liberty; Java Community in The Matrix]]
  * [[https://www.eclipsecon.org/sites/default/files/slides/adopt-open-j9-spring-boot-performance.pdf|]]