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From "Vijay (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-3723) Include await for the queues in tpstats
Date Mon, 16 Jan 2012 20:43:40 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-3723?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13187169#comment-13187169
] 

Vijay commented on CASSANDRA-3723:
----------------------------------

>>> latency = await + this task's processing time, right?
Currently it is just the processing time... what i am proposing is to change the latency number
to something like await. (If that makes sense).

>>> not sure why we'd remove the latency though
I am not saying we have to remove it... Just like a enhancement instead of adding one more
metric to glance :)
                
> Include await for the queues in tpstats
> ---------------------------------------
>
>                 Key: CASSANDRA-3723
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3723
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Tools
>    Affects Versions: 1.2
>            Reporter: Vijay
>            Assignee: Vijay
>            Priority: Minor
>
> Something simillar to IOSTAT await, there is an additional over head not sure if we have
to make an exception for this.... but i think this has a huge "+" while troubleshooting....
> await
> The average time (in milliseconds) for I/O requests issued to the request to be served.
This includes the time spent by the requests in queue and the time spent servicing them 
> or we can also have a simple average of time spent in the queue before being served.

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