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From "Vijay (Updated) (JIRA)" <>
Subject [jira] [Updated] (CASSANDRA-3723) Include await for the queues in tpstats
Date Wed, 18 Jan 2012 00:02:40 GMT


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

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

Let me know, Thanks!
> Include await for the queues in tpstats
> ---------------------------------------
>                 Key: CASSANDRA-3723
>                 URL:
>             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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