[jboss-jira] [JBoss JIRA] (JGRP-2100) Timer: don't submit non-blocking tasks to the thread pool

[Bela Ban (JIRA)]

Bela Ban created JGRP-2100:
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             Summary: Timer: don't submit non-blocking tasks to the thread pool
                 Key: JGRP-2100
                 URL: https://issues.jboss.org/browse/JGRP-2100
             Project: JGroups
          Issue Type: Feature Request
            Reporter: Bela Ban
            Assignee: Bela Ban
             Fix For: 4.0


Currently, {{TimeScheduler3}} has a runner thread which continually takes tasks from a {{DelayQueue}} and submits them to the thread pool.

If a task is non-blocking, this is not necessary; instead the task can be run on the runner's thread. This will reduce the number of thread created in the thread pool.

Investigate whether it is possible to mark tasks as blocking or non-blocking. Example: an {{AgeOutCache}} task is always non-blocking. A {{UNICAST3}} or {{NAKACK2}} retransmission task is (potentially) blocking if {{TCP}} is used as transport and non-blocking if for example {{UDP}} or {{TCP_NIO2}} are used.



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