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From Nate McCall <n...@thelastpickle.com>
Subject Re: Large # of Pending Tasks?
Date Mon, 26 Aug 2013 13:58:28 GMT
I'm not quite sure what you mean by 'active task count' - what is the
output of 'nodetool tpstats' when you run this test?


On Mon, Aug 26, 2013 at 4:39 AM, Girish Kumar <girishkumarbk@gmail.com>wrote:

> Hi,
>
> I'm using a single node Cassandra on 24 Core/48GB system.  I have set my
> writers and readers (in yaml) to be around 192 for both and read and write.
>  In this mode, when stressed with 192 threads for inserts and reads, what I
> observed via the jconsole of 'client request' the active read and write
> tasks never go beyond 24.  However there are as many as 192 pending tasks.
>  I was expecting Cassandra server to utilize the threads that are created
> using yaml and perform as many parallel inserts and reads.
>
> Why cassandra active task count doesn't go beyond 24 when the actual
> writers and readers are around 192 ?
>
> Any thoughts?
> /BK
>

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