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https://issues.apache.org/jira/browse/CASSANDRA-21702?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dmitry Konstantinov updated CASSANDRA-21702:
--------------------------------------------
Change Category: Performance
Complexity: Low Hanging Fruit
Fix Version/s: 6.0.x
7.x
Status: Open (was: Triage Needed)
> Reduce prepared statement binding overhead for Cassandra stress
> ----------------------------------------------------------------
>
> Key: CASSANDRA-21702
> URL: https://issues.apache.org/jira/browse/CASSANDRA-21702
> Project: Apache Cassandra
> Issue Type: Improvement
> Components: Tool/stress
> Reporter: Dmitry Konstantinov
> Assignee: Dmitry Konstantinov
> Priority: Normal
> Fix For: 6.0.x, 7.x
>
> Attachments: bind_lookup_overhead.png, stress_bind_after_cpu.html,
> stress_bind_before_cpu.html
>
>
> Under high batch write load Cassandra stress burn a lot of CPU to lookup
> Codecs for bound values: 21.5% of overall CPU consumption ("codecFor" to
> seach in profiles).
> To avoid this overhead we can retrieve required codecs only for the prepared
> statement and then use explicitly them when we bind values to avoid codec
> lookup cost. It drops the overhead to 0.
> [^stress_bind_before_cpu.html]
> [^stress_bind_after_cpu.html]
> !bind_lookup_overhead.png|width=400!
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