[jira] [Assigned] (CASSANDRA-14816) Add Operating System Specific Setup Documentation for Cassandra

["Lorina Poland (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-14816?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lorina Poland reassigned CASSANDRA-14816:
-----------------------------------------

    Assignee: Lorina Poland

> Add Operating System Specific Setup Documentation for Cassandra
> ---------------------------------------------------------------
>
>                 Key: CASSANDRA-14816
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-14816
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Documentation/Website
>            Reporter: Joey Lynch
>            Assignee: Lorina Poland
>            Priority: Low
>
> There are a number of operating system tunings that can vastly improve Cassandra's performance on Linux in particular things like:
> # Setting {{/sys/block/${DEVICE}/queue/read_ahead_kb}} to something more reasonable like 32
> # Setting the qdisc on modern linux to something better like {{tc-fq}} with {{bbr}}
> # Setting {{nofile}} ulimits properly and {{fs.file-max}}
> # Potentially raising {{vm.max_map_count}} even higher than the default debian package does
> # Using raid instead of jbod
> # Mounting /tmp on a tmpfs and turning back on {{PerfDisableSharedMem}}
> And many more ... I think many of the recommendations from [Amy Tobey's|https://tobert.github.io/pages/als-cassandra-21-tuning-guide.html] 2.1 guide may still be pretty relevant.
> Perhaps we can document some of these in the website's Operations section?



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