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From "Ryan McGuire (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-8457) nio MessagingService
Date Fri, 12 Dec 2014 15:19:14 GMT


Ryan McGuire commented on CASSANDRA-8457:

@Benedict modifying cstar_perf to run multiple instances per node is a larger task, and I'm
wondering how useful that will be (seems like a lot of resource contention / non-real-world
variables.) Assuming we had the alternative of 100% automated EC2 cluster bootstrapping/teardown,
how often would we want to run these larger tests for it to be worth it? 

> nio MessagingService
> --------------------
>                 Key: CASSANDRA-8457
>                 URL:
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Core
>            Reporter: Jonathan Ellis
>            Assignee: Ariel Weisberg
>              Labels: performance
>             Fix For: 3.0
> Thread-per-peer (actually two each incoming and outbound) is a big contributor to context
switching, especially for larger clusters.  Let's look at switching to nio, possibly via Netty.

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