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https://issues.apache.org/jira/browse/CASSANDRA-8160?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14329267#comment-14329267
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Benedict commented on CASSANDRA-8160:
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What's the rationale here? This only seems to make sense if the dataset is
smaller than memory? And even then, using FADV_SEQUENTIAL seems unhelpful. All
that offers is the OS the opportunity to _evict_ pages since it thinks we're
done with them. WILLNEED asks it _not_ to, but it may do so at the expense of
pages it really should retain.
> CF level option to call posix_fadvise for sstables on creation and startup
> --------------------------------------------------------------------------
>
> Key: CASSANDRA-8160
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8160
> Project: Cassandra
> Issue Type: New Feature
> Components: Core
> Reporter: Matt Stump
> Assignee: Branimir Lambov
> Priority: Minor
> Fix For: 2.1.4
>
> Attachments: trunk-8160.txt
>
>
> We should have a CF level configuration with will result in posix_fadvise
> being called for sstables for that CF. It should be called on node startup
> and for new sstables. This should be configurable per CF to allow for some
> CFs to be prioritized above others. Not sure if we should use
> POSIX_FADV_SEQUENTIAL or POSIX_FADV_WILLNEED.
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