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  1. IronJacamar
  2. JBJCA-1305

Performance degradation using fair semaphores in heavily contended workloads

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    • Icon: Enhancement Enhancement
    • Resolution: Done
    • Icon: Major Major
    • WildFly/IronJacamar 1.3.2.Final
    • WildFly/IronJacamar 1.3.1.Final
    • Core
    • None

      Under heavy contention, a fair semaphore causes performance degradation for threads trying to acquire a permit from the semaphore. Changing the semaphore to not fair alleviates the performance degradation under heavy contention.

            jpederse@redhat.com Jesper Pedersen
            johara@redhat.com John O'Hara
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