[jboss-jira] [JBoss JIRA] (JGRP-2016) oob min/max thread doesn't work when oob_thread_pool_queue_enabled = true

[Bela Ban (JIRA)]

    [ https://issues.jboss.org/browse/JGRP-2016?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13164444#comment-13164444 ] 

Bela Ban edited comment on JGRP-2016 at 2/17/16 10:55 AM:
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This is default behavior of the underlying {{j.u.c.ThreadPoolExecutor}}. If you disable the queue (or set it to a very small size), you'll get more than the 10 min threads. See [1] for details.
Closing this issue now.

[1] http://www.jgroups.org/manual/index.html#_overview_2


was (Author: belaban):
This is default behavior of the underlying {{j.u.c.ThreadPoolExecutor}}. If you disable the queue (or set it to a very small size), you'll get more than the 10 min threads.
Closing this issue now.

> oob min/max thread doesn't work when  oob_thread_pool_queue_enabled = true
> --------------------------------------------------------------------------
>
>                 Key: JGRP-2016
>                 URL: https://issues.jboss.org/browse/JGRP-2016
>             Project: JGroups
>          Issue Type: Enhancement
>    Affects Versions: 3.6.7
>         Environment: Linux 3.19.0-25-generic #26~14.04.1-Ubuntu SMP Fri Jul 24 21:16:20 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
> java version "1.7.0_80"
> Java(TM) SE Runtime Environment (build 1.7.0_80-b15)
> Java HotSpot(TM) 64-Bit Server VM (build 24.80-b11, mixed mode)
>            Reporter: rama rama
>            Assignee: Bela Ban
>            Priority: Critical
>
> hello,
> i have noticed that setting
> oob_thread_pool_min_threads = 10
> oob_thread_pool_max_threads = 100
> oob_thread_pool_queue_enabled = true
> doesn't create new thread (up to 100) but keep thread number at 10 and queue
> items before spawning new threads.
> i think that the same behavioud apply to 
> thread_pool_queue_enabled = true
> What is going to block me, it's that if i set 100 threads, i expect to get higher concurrency 
> rather than using queue, and use queue AFTER having finished the max_thread.
> in that way the concurrency seem to get limited, am i wrong?
> as a workaround i can set 100 as min thread, but seems to waste quite a lot of resource and ctx switch if my working scenario is just to handle spikes of load every time to time (and on the same server i was thinking of running more application that use the same idea, having all of them create 100 threads sound unhealty)
> forgive my terrible english, any feedback is appreciated



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