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From "Vikas Saurabh (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (OAK-4543) Add info about event generation and consumption by observer
Date Wed, 27 Jul 2016 14:14:20 GMT

    [ https://issues.apache.org/jira/browse/OAK-4543?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15395736#comment-15395736
] 

Vikas Saurabh commented on OAK-4543:
------------------------------------

Looks useful to me. My understanding being that the approach should be to find listener with
high ratios and fix observer code. Otoh, if the queue length is increasing with listener with
relatively low ratio, then look for logged information to see what's going wrong.

> Add info about event generation and consumption by observer
> -----------------------------------------------------------
>
>                 Key: OAK-4543
>                 URL: https://issues.apache.org/jira/browse/OAK-4543
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>            Reporter: Vikas Saurabh
>            Assignee: Marcel Reutegger
>            Priority: Minor
>              Labels: candidate_oak_1_0, candidate_oak_1_2, candidate_oak_1_4, monitoring,
observation, performance
>             Fix For: 1.6
>
>         Attachments: OAK-4543.patch
>
>
> I'm not sure if it's possible in the current scheme of things (implementation), but it'd
useful to be able to easily differentiate between slow diff calculation or slow observer as
a reason to see why observation queue might fill up.



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