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https://issues.apache.org/jira/browse/CASSANDRA-8702?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14296964#comment-14296964
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Mike Adamson commented on CASSANDRA-8702:
-----------------------------------------

The values came from JMC looking at the <cfs>.WriteLatency.Min, 
<cfs>.WriteLatency. Max and <cfs>.WriteTotalLatency.Count.

If the Min is 315.853 wouldn't you expect the WriteTotalLatency.Count to be 
~340 not 339667? or am I missing something here (likely). 




> LatencyMetrics is reporting total latency in nanoseconds rather than 
> microseconds 
> ----------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-8702
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8702
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Mike Adamson
>            Assignee: T Jake Luciani
>             Fix For: 3.0
>
>
> I don't know if this is the desired behaviour but all the comments in the 
> code indicate that it should be reporting microseconds. 
> A single write shows the following:
> {code}
> WriteLatency
> ------------
> Count: 1
> Min: 315.853
> Max: 379.022
> WriteTotalLatency
> -----------------
> Count: 339667
> {code}
> In LatencyMetrics:
> {code}
>     /** Total latency in micro sec */
>     public final Counter totalLatency;
> {code}



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