Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

This is the documentation for a snapshot of the develop branch, built from commit 0f79ae966a.
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Performance

Performance of Boost.Coroutine was measured on the platforms shown in the following table. Performance measurements were taken using rdtsc and boost::chrono::high_resolution_clock, with overhead corrections, on x86 platforms. In each case, cache warm-up was accounted for, and the one running thread was pinned to a single CPU.

Table 1.1. Performance of asymmetric coroutines

Platform

switch

construction (protected stack-allocator)

construction (preallocated stack-allocator)

construction (standard stack-allocator)

i386 (AMD Athlon 64 DualCore 4400+, Linux 32bit)

49 ns / 50 cycles

51 µs / 51407 cycles

14 µs / 15231 cycles

14 µs / 15216 cycles

x86_64 (Intel Core2 Q6700, Linux 64bit)

12 ns / 39 cycles

16 µs / 41802 cycles

6 µs / 10350 cycles

6 µs / 18817 cycles


Table 1.2. Performance of symmetric coroutines

Platform

switch

construction (protected stack-allocator)

construction (preallocated stack-allocator)

construction (standard stack-allocator)

i386 (AMD Athlon 64 DualCore 4400+, Linux 32bit)

47 ns / 49 cycles

27 µs / 28002 cycles

98 ns / 116 cycles

319 ns / 328 cycles

x86_64 (Intel Core2 Q6700, Linux 64bit)

10 ns / 33 cycles

10 µs / 22828 cycles

42 ns / 710 cycles

135 ns / 362 cycles



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