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Victor Zverovich 2017-12-10 06:54:51 -08:00 committed by GitHub
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@ -349,33 +349,38 @@ macOS Sierra, best of three) is shown in the following tables.
**Optimized build (-O3)** **Optimized build (-O3)**
============ =============== ==================== ================== ============= =============== ==================== ==================
Method Compile Time, s Executable size, KiB Stripped size, KiB Method Compile Time, s Executable size, KiB Stripped size, KiB
============ =============== ==================== ================== ============= =============== ==================== ==================
printf 2.3 29 26 printf 2.7 29 26
IOStreams 26.9 59 55 printf+string 18.4 29 26
fmt 38.0 37 34 IOStreams 34.6 59 55
tinyformat 42.5 104 98 fmt 22.0 37 34
Boost Format 112.2 774 751 tinyformat 51.8 103 97
Folly Format 152.3 104 87 Boost Format 120.5 762 739
============ =============== ==================== ================== Folly Format 158.7 102 87
============= =============== ==================== ==================
As you can see, fmt has two times less overhead in terms of resulting As you can see, fmt has 60% less overhead in terms of resulting binary code
code size compared to IOStreams and comes pretty close to ``printf``. size compared to IOStreams and comes pretty close to ``printf``. Boost Format
Boost Format has by far the largest overheads. has by far the largest overheads.
``printf+string`` is the same as ``printf`` but with extra ``<string>``
include to measure the overhead of the latter.
**Non-optimized build** **Non-optimized build**
============ =============== ==================== ================== ============= =============== ==================== ==================
Method Compile Time, s Executable size, KiB Stripped size, KiB Method Compile Time, s Executable size, KiB Stripped size, KiB
============ =============== ==================== ================== ============= =============== ==================== ==================
printf 2.0 33 30 printf 2.4 33 30
IOStreams 25.4 56 52 printf+string 18.5 33 30
fmt 37.0 57 51 IOStreams 31.9 56 52
tinyformat 30.2 88 82 fmt 20.9 56 51
Boost Format 54.0 364 302 tinyformat 38.9 88 82
Folly Format 107.1 438 424 Boost Format 64.8 366 304
============ =============== ==================== ================== Folly Format 113.5 442 428
============= =============== ==================== ==================
``libc``, ``lib(std)c++`` and ``libfmt`` are all linked as shared ``libc``, ``lib(std)c++`` and ``libfmt`` are all linked as shared
libraries to compare formatting function overhead only. Boost Format libraries to compare formatting function overhead only. Boost Format