[jira] [Created] (PROTON-700) small performance improvement from inling one fn.

["michael goulish (JIRA)" <ji...@apache.org>]

michael goulish created PROTON-700:
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             Summary: small performance improvement from inling one fn.
                 Key: PROTON-700
                 URL: https://issues.apache.org/jira/browse/PROTON-700
             Project: Qpid Proton
          Issue Type: Improvement
          Components: proton-c
            Reporter: michael goulish
            Assignee: michael goulish
            Priority: Minor


inlining the internal function pn_data_node()  improves speed somewhere between 2.6% and 6%, depending on architecture.

This is based on testing I did with two C-based clients written at the engine interface level.

The higher 6% figure was seen on a more modern machine with recent Intel processors, the lower figure was seen on an older box with AMD processors.

But the effect is real: after 5- repetition before the change & 50 after, T-test indicates odds of this happening by chance is 2.0e-18 .



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