https://www.chenk.top/en/tags/profiling/Recent content in Profiling on Chen Kai BlogHugoenWed, 27 Apr 2022 09:00:00 +0000https://www.chenk.top/en/python-engineering/08-performance-and-profiling/Wed, 27 Apr 2022 09:00:00 +0000https://www.chenk.top/en/python-engineering/08-performance-and-profiling/<p>Donald Knuth&rsquo;s famous quote is often half-remembered. The full version is: &ldquo;We should forget about small efficiencies, say about 97% of the time: premature optimization is the root of all evil. Yet we should not pass up our opportunities in that critical 3%.&rdquo; The second sentence is the key. Performance work isn&rsquo;t about making everything fast; it&rsquo;s about finding the 3% that matters and making that fast.</p> <p>This article is about finding that 3%. You&rsquo;ll learn to profile first, optimize second, and measure the impact of each change.</p>