Perhaps you should use pidstat to validate which processes are running on the two busy cores?

> On Jan 11, 2018, at 6:25 AM, Vlad K. <nginx-ml@acheronmedia.hr> wrote:
>
> On 2018-01-11 11:59, Lucas Rolff wrote:
>> Now, in your case with php-fpm in the mix as well, controlling that
>> can be hard ( not sure if you can pin php-fpm processes to cores ) –
>> but for nginx and RX/TX queues, it’s for sure possible.
>
>
> Should be doable with cgroups / cpusets? CPUAffinity directive in the service unit file ( see systemd.exec(5) )?
>
>
>
> --
> Vlad K.
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