On 9/1/2018 12:27 PM, Kevin Bowling wrote:

I find it's about equal, and even exceeds Linux in terms of it's NUMA
support and multi-processor support. I need to move some systems away from
Solaris and off to Linux, and I find it's NUMA support lacking in certain
ways.

This is pure fantasy.  To understand Linux performance on high core
count and multi-socket machines is to have at least passing knowledge
of Paul McKenney's genius work on RCU [1] and NUMA [2] at Sequent [3]
and on Linux.  IBM bought Sequent, made a favorable patent grant of
RCU for Linux, and the rest history.

Thanks :) - I'm basing this on Oracle database performance, for the most part, and it's weird way of supporting NUMA on Linux in a bass-ackwards sort of way. Nothing I see in the latest RedHat/CentOS tells me it even cares about NUMA, but maybe that's more of their "we know better than you" mentality and it's all hidden under the covers somewhere.

ak