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  1. Camel
  2. CAMEL-20199

Complete support of Virtual Threads

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    • Improvement
    • Status: Open
    • Major
    • Resolution: Unresolved
    • None
    • None
    • came-core
    • None
    • Unknown

    Description

      For full support of Virtual Threads, several sub-tasks need to be done:

      • Avoid Lengthy and Frequent Pinning by replacing synchronized blocks with ReentrantLocks (use the option -Djdk.tracePinnedThreads=ful to print stack traces when a thread blocks while pinned)
      • Don't Cache Expensive Reusable Objects in Thread-Local Variables by avoiding thread locals when possible since when using Virtual Threads, the objects will never be reused so if the thread-local variables are never reset, it will end up with an OOME.
      • Use Semaphores to Limit Concurrency instead of relying on the size of the thread pool when applicable
      • Allow to expose ThreadPerTaskExecutor through JMX indeed so far it is limited to ThreadPoolExecutor

      References https://docs.oracle.com/en/java/javase/21/core/virtual-threads.html

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              Unassigned Unassigned
              nfilotto Nicolas Filotto
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                Created:
                Updated: