fix typos
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@ -6,7 +6,7 @@ Performance Tools) for profiling. Note, we also considered using
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comparison. This will not tell you how long (wall clock time) each function
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took, but it will help you determine which functions are the most expensive.
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## Prequisities
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## Prerequisites
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On Linux (Debian), you need to install:
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```
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@ -33,7 +33,7 @@ human-friendly graph that generated from that profiling data.
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#### Errors on macOS
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Note, on macOS there may a lot of "errors" like:
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Note, on macOS there may be a lot of "errors" like:
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```
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otool-classic: can't open file: /usr/lib/libc++.1.dylib
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```
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@ -78,4 +78,4 @@ my_func 189 (0.6%) of 28758 (96.8%)
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* 189 is the number of profiling samples in this function.
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* 0.6% is the percentage of profiling samples in the functions.
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* 28758 is the number of profiling samples in this function and its callees.
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* 96.8% is the percentage of profiling samples in this function and its callees.
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* 96.8% is the percentage of profiling samples in this function and its callees.
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