Description of problem:
Setting "ms_async_affinitiy_cores" doesn't make worker threads to bind to cores.

Version-Release number of selected component (if applicable):
12.2.1-39redhat1xenial

How reproducible:
Always

Steps to Reproduce:
1.I have set the following ms_async config in conf file.

ms_async_max_op_threads=8
ms_async_op_threads=5
ms_async_affinity_cores=1,4
ms async set affinity=true


If above syntax is correct then all the async worker threads should be bound to core 1-4,
but something different is happening.

Here is the output "top -H -p  <pid>". last field is the core.




87381       1 64045 ceph     ceph     ?          0:00.02  0.0  0.6 S msgr-worker-0                                         4
  87382       1 64045 ceph     ceph     ?          0:00.02  0.0  0.6 S msgr-worker-1                                        10
  87383       1 64045 ceph     ceph     ?          0:00.04  0.3  0.6 S msgr-worker-2                                         2
  87384       1 64045 ceph     ceph     ?          0:00.04  0.0  0.6 S msgr-worker-3                                         5
  87385       1 64045 ceph     ceph     ?          0:00.02  0.0  0.6 S msgr-worker-4                                         3


affinity parameter is not obeyed.


This is on a cpu with 12 cores.

Am I missing something very basic.