[jira] [Updated] (CASSANDRA-19529) Latency regression on 4.1 comparing to 4.0

["Nicolas Henneaux (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-19529?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Nicolas Henneaux updated CASSANDRA-19529:
-----------------------------------------
     Bug Category: Parent values: Degradation(12984)Level 1 values: Performance Bug/Regression(12997)
    Discovered By: Workload Replay
    Since Version: 4.0-alpha1

> Latency regression on 4.1 comparing to 4.0
> ------------------------------------------
>
>                 Key: CASSANDRA-19529
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-19529
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Nicolas Henneaux
>            Priority: Normal
>         Attachments: screenshot-1.png
>
>
> When upgrading from Cassandra 4.0.10 to 4.1.3, I noticed an increase from application point of view latency from ~8ms to ~15ms when upgrading to Cassandra. The latency includes 3 simple queries (INSERT + SELECT (PK+CK) + UPDATE) plus application overhead.
> It has been investigated in CASSANDRA-18766 to realize it is not related.
> I tested to downgrade to 4.1alpha1 and the latency regression is still there with same value.
> In a graph how it looks like 
>  !screenshot-1.png! 



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