[gacuna]

Is yellow dog, posix compliant, and is it real-time linux?

[production_coordinator]

Yellow Dog Linux includes the Native POSIX Thread Library (NPTL), a new
implementation of POSIX threads for Linux. This library provides
performance improvements and increased scalability.

This thread library is designed to be binary compatible with the old
LinuxThreads implementation; however, applications that rely on the
places where the LinuxThreads implementation deviates from the POSIX
standard will need to be fixed. Notable differences include:

. Signal handling has changed from per-thread signal handling to POSIX
process signal handling.

. getpid() returns the same value in all threads.

. Thread handlers registered with pthread_atfork are not run if
vfork() is used.

. No manager thread.