43 lines
1.3 KiB
Plaintext
43 lines
1.3 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 of __boost_context__ was measured on the platforms shown in the
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following table. Performance measurements were taken using `rdtsc`, with
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overhead corrections, on x86 platforms. In each case, stack protection was
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active, cache warm-up was accounted for, and the one running thread was pinned
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to a single CPU. The code was compiled using the build options,
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'variant = release cxxflags = -DBOOST_DISABLE_ASSERTS'.
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Applying `-DBOOST_USE_UCONTEXT` to cxxflags the performance of `ucontext` will
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be measured too.
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The numbers in the table are the number of cycles per iteration, based upon an
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average computed over 10 iterations.
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[table Performance of context switch
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[[Platform] [ucontext_t] [fcontext_t with fpu] [fcontext_t without fpu] [boost::function]]
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[
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[AMD Athlon 64 DualCore 4400+ (32bit Linux)]
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[846 cycles]
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[65 cycles]
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[43 cycles]
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[15 cycles]
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]
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[
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[Intel Core2 Q6700 (64bit Linux)]
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[1481 cycles]
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[172 cycles]
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[63 cycles]
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[25 cycles]
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]
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]
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[endsect]
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