[mod_cluster-issues] [JBoss JIRA] (MODCLUSTER-449) Implement ramp-up when starting new nodes
Casey Lee (JIRA)
issues at jboss.org
Thu May 7 11:16:46 EDT 2015
[ https://issues.jboss.org/browse/MODCLUSTER-449?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13066274#comment-13066274 ]
Casey Lee commented on MODCLUSTER-449:
--------------------------------------
I've developed a new load metric that has a "warm up" period where the capacity starts at 0 and then grows linearly to the true capacity over a configurable number of seconds (default 120). Would this be something you'd be interested in me submitted a pull request for?
> Implement ramp-up when starting new nodes
> -----------------------------------------
>
> Key: MODCLUSTER-449
> URL: https://issues.jboss.org/browse/MODCLUSTER-449
> Project: mod_cluster
> Issue Type: Feature Request
> Components: Core & Container Integration (Java)
> Reporter: Radoslav Husar
> Assignee: Radoslav Husar
> Priority: Critical
> Fix For: 1.3.2.Alpha1
>
>
> IIUC this has been a problem since inception. The problem is that the initial load stays in effect for performing load-balancing decisions until a new stat interval kicks in.
> This effect is mitigated by load decay over time, but for the time a new node joins in, it can get overloaded upon startup.
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