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@@ -8,7 +8,7 @@ Measuring performance
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We have to know where the "bottlenecks" are to know how to speed up our program.
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Bottlenecks are the slowest parts of the program that limit the rate that
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-everything can progress. Focussing on bottlenecks allows us to concentrate our
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+everything can progress. Focusing on bottlenecks allows us to concentrate our
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efforts on optimizing the areas which will give us the greatest speed
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improvement, instead of spending a lot of time optimizing functions that will
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lead to small performance improvements.
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Sheep