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https://issues.apache.org/jira/browse/CASSANDRA-14261?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jeff Jirsa updated CASSANDRA-14261:
-----------------------------------
    Status: Ready to Commit  (was: Patch Available)

> Compaction Profiling Improvements
> ---------------------------------
>
>                 Key: CASSANDRA-14261
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-14261
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Compaction
>            Reporter: Jeff Jirsa
>            Assignee: Jeff Jirsa
>            Priority: Minor
>             Fix For: 4.0
>
>         Attachments: patched-hot-threads.png, patched-tlab.png, 
> unpatched-hot-threads-top.png, unpatched-hot-threads.png, unpatched-tlab.png
>
>
> There's some low hanging fruit in some laptop compaction runs, such as 
> creating a ton of the same object unnecessarily and hashing cell names 
> repeatedly to see if a column is dropped even when we should know that the 
> table has no dropped columns. 



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