[
https://issues.apache.org/jira/browse/CASSANDRA-21725?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Dmitry Konstantinov updated CASSANDRA-21725:
--------------------------------------------
Fix Version/s: 6.0.x
7.x
> Use SWAR for fast ASCII check in UTF8Serializer.UTF8Validator
> -------------------------------------------------------------
>
> Key: CASSANDRA-21725
> URL: https://issues.apache.org/jira/browse/CASSANDRA-21725
> Project: Apache Cassandra
> Issue Type: Improvement
> Components: Local/Other
> Reporter: Dmitry Konstantinov
> Assignee: Dmitry Konstantinov
> Priority: Normal
> Fix For: 6.0.x, 7.x
>
>
> To speed up the ASCII check path in UTF8Serializer.UTF8Validator, we can use
> SWAR.
> Another option would be to use vector API but we have to support older
> versions of JDK + vector API is still in incubator..
> Auto-vectorization unfortunately does not work for this logic in JDK21.
> In preliminary microbenchmarks I have SWAR and vector API produces similar
> results.
> Evaluated options:
> https://github.com/netudima/java-perf-tests/tree/main/src/main/java/org/github/netudima/perf/tests/utf8
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
