[infinispan-issues] [JBoss JIRA] (ISPN-6062) Remove megamorphic calls when calling next method in interceptor stack

[Radim Vansa (JIRA)]

Radim Vansa created ISPN-6062:
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             Summary: Remove megamorphic calls when calling next method in interceptor stack
                 Key: ISPN-6062
                 URL: https://issues.jboss.org/browse/ISPN-6062
             Project: Infinispan
          Issue Type: Enhancement
          Components: Core
    Affects Versions: 8.1.0.Final
            Reporter: Radim Vansa


With current acceptor-visitor architecture of interceptor stack, calls to next interceptor use megamorphic interface calls. This is suboptimal as it prohibits the JIT compiler from inlining the calls.

Since the interceptor stack is not changed very often, we may adapt the code programmatically to call next interceptor directly.

The solution should verify that interceptor stack is inlined as much as possible with 'common' JVM options - increasing -XX:MaxInlineLevel is viable, while we should not request users to mess with -XX:DesiredMethodLimit. Preferably, -XX:FreqInlineSize and -XX:MaxInlineSize should stay at defaults.



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