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https://issues.apache.org/jira/browse/CASSANDRA-5727?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13724016#comment-13724016
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Jonathan Ellis commented on CASSANDRA-5727:
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Yes. Time was proportional to the bytes compacted [bytesread graph].
> Evaluate default LCS sstable size
> ---------------------------------
>
> Key: CASSANDRA-5727
> URL: https://issues.apache.org/jira/browse/CASSANDRA-5727
> Project: Cassandra
> Issue Type: Task
> Components: Core
> Reporter: Jonathan Ellis
> Assignee: Daniel Meyer
> Fix For: 1.2.9
>
> Attachments: BytesRead_vs_LCS.png, ReadLatency_vs_LCS.png,
> Throughtput_vs_LCS.png, UpdateLatency_vs_LCS.png
>
>
> What we're not sure about is the effect on compaction efficiency --
> larger files mean that each level contains more data, so reads will
> have to touch less sstables, but we're also compacting less unchanged
> data when we merge forward.
> So the question is, how big can we make the sstables to get the benefits of
> the
> first effect, before the second effect starts to dominate?
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