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https://issues.apache.org/jira/browse/CASSANDRA-7217?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13997409#comment-13997409
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Benedict commented on CASSANDRA-7217:
-------------------------------------

I haven't investigated much at all, so I don't know the answer to any of these 
questions yet (except that it did indeed come about off the back of 
CASSANDRA-4718). The only thing I can say for sure is that it is unrelated to 
MaxRPC (i.e. nothing to do with native transport threads blocking on adding to 
the work queue).


> Native transport performance (with cassandra-stress) drops precipitously past 
> around 1000 threads
> -------------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-7217
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7217
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>            Reporter: Benedict
>              Labels: performance
>             Fix For: 2.1.0
>
>
> This is obviously bad. Let's figure out why it's happening and put a stop to 
> it.



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