On Mon, 8 Oct 2018 15:39:11 -0400, James Platt
<jbiomant...@gmail.com> wrote:

>I wonder if this has anything to do with mitigation for Spectre,
>Meltdown or the other speculative execution vulnerabilities that have
>been identified recently.  I understand that some or all of the
>patches affect the performance of multi-CPU processing in general.

It's possible but unlikely. The mitigations do slow down processing,
but they don't much affect CPU usage as measured by the OS.  The OP
claimed to be seeing large variations in CPU usage as more cores were


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