Last I checked, processor affinity is broken on Linux (or at least
certain versions of kernel, glibc, etc). I don’t know that this has
been fixed in Nginx, so I thought I’d point out this library that could
perhaps be used to solve the problem:
http://www.open-mpi.org/projects/plpa/
http://www.open-mpi.org/software/plpa/v1.1/
It’s part of the Open MPI project.
Regards,
Cliff