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Posted to issues@camel.apache.org by "Otavio Rodolfo Piske (Jira)" <ji...@apache.org> on 2023/05/04 09:06:00 UTC

[jira] [Created] (CAMEL-19319) Type check misses

Otavio Rodolfo Piske created CAMEL-19319:
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             Summary: Type check misses
                 Key: CAMEL-19319
                 URL: https://issues.apache.org/jira/browse/CAMEL-19319
             Project: Camel
          Issue Type: Task
          Components: came-core
    Affects Versions: 4.0-M2
            Reporter: Otavio Rodolfo Piske
            Assignee: Otavio Rodolfo Piske


Within the core code there are many circumstances where the type checks performed by our code, causes the JVM to miss a cache hit and enter a slower code path. 

This can be caused when type check (such as an {{instanceof}} check) fails for a class instance which implements multiple types (incurring in both a cache a traversal of the secondary supers ArrayList). 

The [type-pollution-agent|https://github.com/RedHatPerf/type-pollution-agent] can be used to identify where this happen. A report is attached to this ticket.







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