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Paulo Motta commented on CASSANDRA-10403:
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Interesting, thanks for your perspective.
The reason I opted for a custom test on EC2, rather than using cstar (which
only gives us raw performance results), is to test different workloads and
check performance consistency over time with both GCs using the default
settings (in addition to the raw performance results). I will also install
opscenter to gather some metrics as the test progresses, so if you have some
particular metric you'd be interested to see please let me know so I'll make
sure to enable them.
> Consider reverting to CMS GC on 3.0
> -----------------------------------
>
> Key: CASSANDRA-10403
> URL: https://issues.apache.org/jira/browse/CASSANDRA-10403
> Project: Cassandra
> Issue Type: Improvement
> Components: Config
> Reporter: Joshua McKenzie
> Assignee: Paulo Motta
> Fix For: 3.0.0 rc2
>
>
> Reference discussion on CASSANDRA-7486.
> For smaller heap sizes G1 appears to have some throughput/latency issues when
> compared to CMS. With our default max heap size at 8G on 3.0, there's a
> strong argument to be made for having CMS as the default for the 3.0 release.
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