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- coreSize – the number of threads to keep in the pool, even if they are idle.
- size - the maximum number of threads to allow in the pool.
- queueSize – the size of the queue used to receive work requests. If an attempt is made to schedule a task when the queue has reached is maximum size, the task will be rejected. The default is 100,000.
- keepAliveTime - when the number of threads is greater than the core, this is the maximum time that excess idle threads will wait for new tasks before terminating.
- allowCoreThreadTimeOut - If false (default) core threads stay alive even when idle. If true, core threads use keepAliveTime to time out waiting for work.
- rejected.execution.handler - One of the following values corresponding to the appropriate JDK RejectedExecutionHandler: abort, discard, discard.oldest, caller.runs (default).
- statistics.off: – false by default. If set to true, the runtime will collect work statistics.
- checkStalledThreads – true if the runtime should check for stalled threads. When a stalled thread is encountered, the runtime will emit a warning event with a stack trace to assist in identifying the current executing code. If statistics are off, this value will be ignored.
- stallThreshold – the threshold in milliseconds after which a thread processing a request is considered stalled.
- stallCheckPeriod – the time in milliseconds between checking for stalled threads.
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The runtime thread pool can be managed using JMX or the The Management Resource Framework (MRF). The MRF address is http://<server address>:<port>/management/runtime/threadpool.