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https://issues.apache.org/jira/browse/OAK-2065?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14552174#comment-14552174
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Chetan Mehrotra commented on OAK-2065:
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[~rombert] Have a look at AsyncIndexStats [1] on how it uses the TimeSeries
support to track the time taken and number of times index is performed over a
given time period. So for background read we would need similar support
* TimeSeries for count - That would enable us to see in past 60 sec how many
time the read has happened
* TimeSeries for read time - That would enable us to see in past 60 sec if
read is performed how much time it took
[1]
https://github.com/apache/jackrabbit-oak/blob/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/index/AsyncIndexUpdate.java#L527-527
> JMX stats for operations being performed in DocumentStore
> ---------------------------------------------------------
>
> Key: OAK-2065
> URL: https://issues.apache.org/jira/browse/OAK-2065
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: mongomk
> Reporter: Chetan Mehrotra
> Assignee: Chetan Mehrotra
> Labels: tooling
> Fix For: 1.3.0
>
> Attachments: OAK-2065-1.patch
>
>
> Currently DocumentStore performs various background operations like
> # Cache consistency check
> # Pushing the lastRev updates
> # Synchrnizing the root node version
> We should capture some stats like time taken in various task and expose them
> over JMX to determine if those background operations are performing well or
> not. For example its important that all tasks performed in background task
> should be completed under 1 sec (default polling interval). If the time taken
> increases then it would be cause of concern
> See http://markmail.org/thread/57fax4nyabbubbef
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