[jira] Commented: (GERONIMO-4021) monitoring console takes too long to recognize that a server is offline

["Viet Hung Nguyen (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/GERONIMO-4021?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12599167#action_12599167 ] 

Viet Hung Nguyen commented on GERONIMO-4021:
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isReachable() uses ICMP echo requests, which aren't always supported by the destination host. This will lead to an inaccurate assessment of whether or not the server is online.

> monitoring console takes too long to recognize that a server is offline
> -----------------------------------------------------------------------
>
>                 Key: GERONIMO-4021
>                 URL: https://issues.apache.org/jira/browse/GERONIMO-4021
>             Project: Geronimo
>          Issue Type: Improvement
>      Security Level: public(Regular issues) 
>          Components: monitoring
>            Reporter: Viet Hung Nguyen
>            Assignee: Viet Hung Nguyen
>             Fix For: 2.2
>
>
> Whenever the monitoring plugin attempts to monitor a server that is offline/doesn't exist, it takes way too long to load the page. We need to reduce this timeout period.
> I suggest that we add a parameter for the admin to set as the "timeout period" somewhere in the portlet. By default, we can choose to have this timeout parameter be set to 5000 milliseconds. 
> We can use the InetAddress class to call isReachable(int timeout) to see if the server is online.

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