[jboss-jira] [JBoss JIRA] (WFCORE-2620) Add ability to read computed runtime values of IO subsystem buffer-pool attributes

[Tomaz Cerar (JIRA)]

    [ https://issues.jboss.org/browse/WFCORE-2620?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13406312#comment-13406312 ] 

Tomaz Cerar commented on WFCORE-2620:
-------------------------------------

I don't think we need to expose IO subsystem buffer pools in jmx.
For calculation lets just do similar as we do for calculated values in workers. In this case it is even simpler as all read attribute handler needs to read value from model if defined, otherwise return default value.
Write operations are not supported beyond reload-required as we currently cannot change values of buffer pools dynamically.

> Add ability to read computed runtime values of IO subsystem buffer-pool attributes
> ----------------------------------------------------------------------------------
>
>                 Key: WFCORE-2620
>                 URL: https://issues.jboss.org/browse/WFCORE-2620
>             Project: WildFly Core
>          Issue Type: Enhancement
>    Affects Versions: 3.0.0.Beta13
>            Reporter: Romain Pelisse
>            Assignee: Romain Pelisse
>   Original Estimate: 2 days
>  Remaining Estimate: 2 days
>
> In IO subsystem there are some attributes which are calculated based on available system resources if not explicitly specified. These attributes are:
> * worker
> ** io-threads
> ** task-max-threads
> * buffer-pool
> ** buffer-size
> ** buffers-per-slice
> ** direct-buffers
> Currently these computed values are not visible for user in the subsystem configuration even with include-runtime=true. 
> To show these runtime values would definitely improve UX.
> Worker attributes are covered by EAP7-616 .
> This issue is about buffer-pool attributes.



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