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64 lines
2.5 KiB
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64 lines
2.5 KiB
Plaintext
[/
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Copyright Oliver Kowalke 2009.
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Distributed under the Boost Software License, Version 1.0.
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(See accompanying file LICENSE_1_0.txt or copy at
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http://www.boost.org/LICENSE_1_0.txt
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]
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[section:performance Performance]
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Performance measurements were taken using `std::chrono::highresolution_clock`,
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with overhead corrections.
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The code was compiled using the build options:
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variant = release, optimization = speed
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[footnote Intel Core2 Q6700, x86_64, 3GHz].
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The columns labeled [*fiber (atomics)] were compiled with default fiber
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synchronization, capable of synchronizing fibers running on different threads.
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The columns labeled [*fiber (raw)] were compiled with [link cross_thread_sync
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`BOOST_FIBERS_NO_ATOMICS`].
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[table Overhead of join (contains fiber-context destruction, fiber-stack deallocation)
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[[thread] [fiber (atomics)] [fiber (raw)] [tbb] [qthread]]
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[[18 \u00b5s] [950 ns] [850 ns] [570 ns] [620 ns]]
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]
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(from [@../../performance/fiber/overhead_join.cpp overhead_join.cpp])
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[table Overhead of detach
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[[thread] [fiber (atomics)] [fiber (raw)]]
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[[126 ns] [21 ns] [15 ns]]
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]
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(from [@../../performance/fiber/overhead_detach.cpp overhead_detach.cpp])
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[table Overhead of yield
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[[thread] [fiber (atomics)] [fiber (raw)]]
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[[1.5 \u00b5s] [189 ns] [168 ns]]
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]
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(from [@../../performance/fiber/overhead_yield.cpp overhead_yield.cpp])
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[table Overhead of waiting on a future
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[[thread] [fiber (atomics)] [fiber (raw)]]
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[[16 \u00b5s] [1.4 \u00b5s] [1.4 \u00b5s]]
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]
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(from [@../../performance/fiber/overhead_future.cpp overhead_future.cpp])
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[table Overhead of fiber creation (contains fiber-stack allocation and preparation, fiber-context construction, scheduler handling)
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[[thread] [fiber (atomics)] [fiber (raw)]]
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[[18 \u00b5s] [210 ns] [205 ns] ]
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]
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(from [@../../performance/fiber/overhead_create.cpp overhead_create.cpp])
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[table Scaling of creating and joining
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[[average of] [thread] [fiber (atomics)] [fiber (raw)]]
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[[10] [8.21 \u00b5s] [1.96 \u00b5s] [1.85 \u00b5s]]
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[[50] [6.67 \u00b5s] [1.40 \u00b5s] [1.27 \u00b5s]]
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[[100] [6.79 \u00b5s] [1.84 \u00b5s] [1.81 \u00b5s]]
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[[500] [8.25 \u00b5s] [1.13 \u00b5s] [1.10 \u00b5s]]
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[[1000] [7.71 \u00b5s] [1.46 \u00b5s] [1.26 \u00b5s]]
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[[5000] [5.67 \u00b5s] [2.11 \u00b5s] [1.90 \u00b5s]]
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[[10000] [5.25 \u00b5s] [2.36 \u00b5s] [1.89 \u00b5s]]
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]
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(from [@../../performance/fiber/scale_join.cpp scale_join.cpp])
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[endsect]
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