What does "nptl" stand for?

Dave Jones davej at redhat.com
Wed Jan 21 14:55:30 UTC 2004

On Wed, 2004-01-21 at 14:34, jasoncc at comcast.net wrote:
> What does the .nptl extension on the kernel name stand for?
> 2.4.22-1.2153.nptl
> While we're at it, what does the whole "-1.2153.nptl" mean?
> I know the 2.4.22 is major.minor.patch.  I also found an interesting tidbit that I didn't know - I read that all stable versions have an even "minor" number and all development versions have an odd "minor" number.  Found it here - ( http://www.leicester.lug.org.uk/meeting/m000713/Kernel_versions/kernel_versions.html )
> -Jason
the 2.4.22 is the base kernel from kernel.org that everything is built
on top of.  the 1.2153 is a CVS ident (so gets bumped with every change
I check in). the .nptl is 'native posix threading library'.
glibc does various magick if it finds its running on a 2.6 kernel,
or a 2.4 kernel with a .nptl suffix. If it doesn't, then it falls back
to the older threading model iirc.


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