Does thread scheduling bug in Linux kernel exists in Mac OS?

[oodi]

There is a bug in linux scheduler which results in significant performance loss. This bug causes idle cores sit there even if there are threads to run immidiately.

Details are here http://www.ece.ubc.ca/~sasha/papers/eurosys16-final29.pdf

So do you know if this bug exists in mac os? Moreover does Apple forked kernel and maintains it seperately?

 

[richard2]

OS X's kernel, XNU, is based on Mach and FreeBSD. I don't believe it shares any code with Linux.

 

[Toutou]

Exactly. Linux and XNU are two totally different things.