[GHC] #8594: sysctl name "hw.ncpu" (HW_NCPU) is deprecated in Mac OS X
GHC
ghc-devs at haskell.org
Thu Dec 5 03:46:31 UTC 2013
#8594: sysctl name "hw.ncpu" (HW_NCPU) is deprecated in Mac OS X
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Reporter: kseo | Owner: simonmar
Type: task | Status: new
Priority: normal | Milestone:
Component: Runtime System | Version: 7.6.3
Resolution: | Keywords:
Operating System: MacOS X | Architecture: Unknown/Multiple
Type of failure: None/Unknown | Difficulty: Unknown
Test Case: | Blocked By:
Blocking: | Related Tickets:
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Comment (by kseo):
It seems hw.ncpu is equivalent to hw.logicalcpu.
{{{
kseo at com100ui-MacBook-Pro:~> sysctl hw.ncpu
hw.ncpu: 4
}}}
{{{
kseo at com100ui-MacBook-Pro:~> sysctl hw.logicalcpu
hw.logicalcpu: 4
}}}
{{{
kseo at com100ui-MacBook-Pro:~> sysctl hw.physicalcpu
hw.physicalcpu: 2
}}}
Does GHC have a benchmark suite to measure the impact of this change? If
not, we can fallback to hw.logicalcpu if hw.ncpu is not available. This at
least preserves the current behavior.
--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8594#comment:2>
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