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Profilers show where time is spent but not which of that time can feasibly be reduced or is worth optimizing.
Drawn from what Nelson Elhage said
What Nelson Elhage actually said
Word for word, with the source under each one. They did not write this page.
Software engineer who writes the blog Made of Bugs about performance
Profilers can only show you "what is there"; skillful performance engineering requires understanding the information that shapes and informs the profile but is "not there" in the profile itself.
Where this was said
↗Performance engineering, profilers, and seeing the invisibleblog.nelhage.com
All 2 korrents from this piecethis one is 1st
Added to korrents 18 Dec 2023 · How quotes work · Something wrong? Tell us
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Our reading — they may agree, disagree or merely touch the same thing. Closest first: a shared subject counts for most, then how near the wording is.