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It nearly doesn't matter in terms of numbers of context switches ifThere is a scalability problem wrt signalling inside the critical section. Does your convdar impl use wait morphing?
you signal a condvar from inside our outside. The above program run
on a Zen4-CPU with WSL2:
inside: 20130
outside: 19811
On a 28 core Skylake-CPU with Ubuntu:
inside: 19997
outside: 19888
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