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https://issues.apache.org/jira/browse/CASSANDRA-16360?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17331222#comment-17331222
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Alexey Zotov commented on CASSANDRA-16360:
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[~samt]
Have you had chance to check the benchmark results? Sorry for being annoying, 
just want to ensure it is still on your radar.

> CRC32 is inefficient on x86
> ---------------------------
>
>                 Key: CASSANDRA-16360
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-16360
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Messaging/Client
>            Reporter: Avi Kivity
>            Priority: Normal
>              Labels: protocolv5
>             Fix For: 4.0.x
>
>
> The client/server protocol specifies CRC24 and CRC32 as the checksum 
> algorithm (cql_protocol_V5_framing.asc). Those however are expensive to 
> compute; this affects both the client and the server.
>  
> A better checksum algorithm is CRC32C, which has hardware support on x86 (as 
> well as other modern architectures).



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