Jeff Waugh wrote:



Should a user decide to have kernel 2.4.x, is this version in Ubunto a
native-posix-threading-library (NPTL) compliant ?



No, they are not as madly patched as other distribution kernels. NPTL is not
a feature of Linux 2.4.



Yes, it is not a feature of 2.4.x but one can patch. It did became in 2.5.x and now 2.6.x.


Incidentally, in one 2.5.x, test in starting/stopping all 100,000 parallel threads on
1GB RAM resulted in 2 seconds as against 15 minutes on non-NPTL kernel
stock.


Before NPTL, MS is superior to Linux in terms of "smoothness" of Win operations.
But not anymore with NPTL.



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