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https://issues.apache.org/jira/browse/CASSANDRA-14747?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16637835#comment-16637835
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Dinesh Joshi edited comment on CASSANDRA-14747 at 10/4/18 6:13 AM:
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[~jolynch] this is pretty cool! I think it would make sense to set all tunable 
knobs to default and see the impact. Then we can start tuning the parameters to 
arrive at sensible defaults. We should also document the findings.


was (Author: djoshi3):
[~jolynch] this is pretty cool! I think it would make sense to set all tunable 
knobs to default and see the impact.

> Evaluate 200 node, compression=none, encryption=none, coalescing=off 
> ---------------------------------------------------------------------
>
>                 Key: CASSANDRA-14747
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-14747
>             Project: Cassandra
>          Issue Type: Sub-task
>            Reporter: Joseph Lynch
>            Assignee: Joseph Lynch
>            Priority: Major
>         Attachments: 3.0.17-QPS.png, 4.0.1-QPS.png, 
> 4.0.11-after-jolynch-tweaks.svg, 4.0.12-after-unconditional-flush.svg, 
> 4.0.15-after-sndbuf-fix.svg, 4.0.7-before-my-changes.svg, 
> 4.0_errors_showing_heap_pressure.txt, 
> 4.0_heap_histogram_showing_many_MessageOuts.txt, 
> i-0ed2acd2dfacab7c1-after-looping-fixes.svg, 
> trunk_vs_3.0.17_latency_under_load.png, 
> ttop_NettyOutbound-Thread_spinning.txt, 
> useast1c-i-0e1ddfe8b2f769060-mutation-flame.svg, 
> useast1e-i-08635fa1631601538_flamegraph_96node.svg, 
> useast1e-i-08635fa1631601538_ttop_netty_outbound_threads_96nodes, 
> useast1e-i-08635fa1631601538_uninlinedcpuflamegraph.0_96node_60sec_profile.svg
>
>
> Tracks evaluating a 200 node cluster with all internode settings off (no 
> compression, no encryption, no coalescing).



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