Benchmarking PHP code the right way
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In this video, I show a list of preconditions for good benchmarking. One helpful tool for designing good benchmarks is Hyperfine, and I want to show how it works, what its benefits are, and what problems you still need to account for.
https://tideways.com/profiler/blog/ho...
Chapters:
00:00 Introduction
00:40 What is Hyperfine ?
01:27 Problems in Benchmarking PHP code
02:42 1. Not using a production equivalent environment
05:12 2. Writing PHP code that OPcache optimizes away
07:49 3. Not accounting for load on the test machine
09:10 4. Not accounting for startup time
10:38 5. Not repeating the tests
12:39 6. Not using statistical methods to compare the performance
14:40 7. Optimizing what does not matter
19:21 Conclusion
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