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Tux12Fun
Apprentice
Joined: 16 Aug 2007
Posts: 156
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 Posted: Sat Nov 10, 2012 5:37 pm Post subject: nptl - Enable or don't ? Native POSIX Threads Library |
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Hi,
I've seen that my gcc is currently without the NPTL USE Flag.
As I've read on websites, NPTL is a new Thread Model.
Now is my question, should I enable this USE-Flag.
Witch performance influence could occur?
I'm using the following kernel:
* sys-kernel/gentoo-sources
Latest version available: 3.6.6
Latest version installed: 3.6.6
Size of files: 80,539 kB
Homepage: http://dev.gentoo.org/~mpagano/genpatches
Description: Full sources including the Gentoo patchset for the 3.6 kernel tree
License: GPL-2 !deblob? ( freedist )
Thank you for your hints. |
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Kollin
Veteran
Joined: 25 Feb 2006
Posts: 1139
Location: Sofia/Bulgaria
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| Posted: Sat Nov 10, 2012 8:00 pm Post subject: |
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Are you using stable or testing, may be the profile also matters?
I'm using the testing branch and desktop/kde profile, nptl is enabled by default:
| Code: | emerge -pv gcc
These are the packages that would be merged, in order:
Calculating dependencies ... done!
[ebuild R ] sys-devel/gcc-4.6.3:4.6 USE="cxx fortran gtk mudflap (multilib) nls nptl openmp (-altivec) -bootstrap -build -doc (-fixed-point) -gcj -go -graphite (-hardened) (-libssp) -multislot -nocxx -nopie -nossp -objc -objc++ -objc-gc {-test} -vanilla" |
_________________
"Dear Enemy: may the Lord hate you and all your kind, may you be turned orange in hue, and may your head fall off at an awkward moment."
"Linux is like a wigwam - no windows, no gates, apache inside..." |
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Ant P.
Watchman
Joined: 18 Apr 2009
Posts: 6920
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| Posted: Sat Nov 10, 2012 8:06 pm Post subject: |
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| NPTL was new... about ten years ago. Is there any reason why you've changed it from the enabled default? |
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