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From "Sam Tunnicliffe (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-14416) Remove string formatting lines from hot path
Date Wed, 25 Apr 2018 14:57:00 GMT


Sam Tunnicliffe commented on CASSANDRA-14416:

Looks like the dtest changes for CASSANDRA-13985 missed one place where it needs to consider
the C* version. I'll push a fix in a minute & you can re-run the tests.

> Remove string formatting lines from hot path
> --------------------------------------------
>                 Key: CASSANDRA-14416
>                 URL:
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Jeff Jirsa
>            Assignee: Jeff Jirsa
>            Priority: Minor
>              Labels: performance
>             Fix For: 3.11.x, 4.x
> In the BufferPool, we have a {{NoSpamLogger}} that gets called in some conditions (like
when we're at or near the cap in a given pool), which has some string formatting on it. In
situations where that log line is invoked, that string formatting gets called before the rate
limiting, which becomes expensive. 

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