Wladimir J. van der Laan
da1357e6cc
Use real number of cores for default -par, ignore virtual cores
...
To determine the default for `-par`, the number of script verification
threads, use [boost::thread::physical_concurrency()](http://www.boost.org/doc/libs/1_58_0/doc/html/thread/thread_management.html#thread.thread_management.thread.physical_concurrency )
which counts only physical cores, not virtual cores.
Virtual cores are roughly a set of cached registers to avoid context
switches while threading, they cannot actually perform work, so spawning
a verification thread for them could even reduce efficiency and will put
undue load on the system.
Should fix issue #6358 , as well as some other reported system overload
issues, especially on Intel processors.
The function was only introduced in boost 1.56, so provide a utility
function `GetNumCores` to fall back for older Boost versions.
2017-03-29 16:06:00 +13:00
Daira Hopwood
83aac13083
Update version numbers.
...
Signed-off-by: Daira Hopwood <daira@jacaranda.org >
2017-03-27 21:01:18 +01:00
jl777
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WLC
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jl777
d965945bda
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jl777
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jl777
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jl777
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jl777
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jl777
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jl777
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jl777
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jl777
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jl777
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jl777
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jl777
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jl777
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jl777
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jl777
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jl777
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jl777
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jl777
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jl777
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jl777
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jl777
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jl777
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jl777
ea3666c630
April 5th activation
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jl777
73de636086
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jl777
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jl777
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jl777
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jl777
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jl777
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jl777
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jl777
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jl777
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jl777
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jl777
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jl777
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jl777
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jl777
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jl777
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jl777
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