[jira] [Updated] (CASSANDRA-3723) Include await for the queues in tpstats

["Vijay (Updated) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-3723?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Vijay updated CASSANDRA-3723:
-----------------------------

    Attachment: 0001-tp-queue-wait-jmx.patch

added a small refactor on MDT and this patch adds the metric @ beforeExecute(Thread t, Runnable task)


Pool Name                    Active   Pending      Completed   Blocked  All time blocked  Queue Wait(ms)
ReadStage                         0         0         851359         0                 0           0.000


Let me know, Thanks!
                
> 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
>         Attachments: 0001-tp-queue-wait-jmx.patch
>
>
> 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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