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https://issues.apache.org/jira/browse/CASSANDRA-8692?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14348852#comment-14348852
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T Jake Luciani commented on CASSANDRA-8692:
-------------------------------------------

We tried using this for a large cluster 96 nodes and there was very little 
difference with or without this patch. This was on GCE and I think networking 
was less of an issue at this scale.

Ariel's debugging code showed the coalescing window should be raised which we 
tried.  A note on the debug mode:  We should change this to be a MS metric vs 
all the hoops you need to run though to get to this number.

> Coalesce intra-cluster network messages
> ---------------------------------------
>
>                 Key: CASSANDRA-8692
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8692
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Ariel Weisberg
>            Assignee: Ariel Weisberg
>             Fix For: 2.1.4
>
>         Attachments: batching-benchmark.png
>
>
> While researching CASSANDRA-8457 we found that it is effective and can be 
> done without introducing additional latency at low concurrency/throughput.
> The patch from that was used and found to be useful in a real life scenario 
> so I propose we implement this in 2.1 in addition to 3.0.
> The change set is a single file and is small enough to be reviewable.



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