K 10
svn:author
V 3
mav
K 8
svn:date
V 27
2019-10-25T14:55:37.423577Z
K 7
svn:log
V 660
MFC r352630: Make nvme(4) driver some more NUMA aware.

 - For each queue pair precalculate CPU and domain it is bound to.
If queue pairs are not per-CPU, then use the domain of the device.
 - Allocate most of queue pair memory from the domain it is bound to.
 - Bind callouts to the same CPUs as queue pair to avoid migrations.
 - Do not assign queue pairs to each SMT thread.  It just wasted
resources and increased lock congestions.
 - Remove fixed multiplier of CPUs per queue pair, spread them even.
This allows to use more queue pairs in some hardware configurations.
 - If queue pair serves multiple CPUs, bind different NVMe devices to
different CPUs.

END