Alex Gaynor • 11/8/2009

Another Unladen Swallow Optimization

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The article details a technical optimization in the Unladen Swallow project for CPython, focusing on replacing the METH_O and METH_NOARGS flags with a new METH_FIXED flag. This change allows direct, faster calls to C functions that take a fixed number of arguments (up to three), avoiding tuple allocation and parsing. It results in a measurable performance boost, specifically a 7% speed increase in a Django benchmark, and discusses limitations and future possibilities for functions with default arguments.

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#Python #performance #optimization
Another Unladen Swallow Optimization

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