On Thu, Jan 4, 2018 at 2:43 PM, Robin Gareus <robin@email-addr-hidden> wrote:
> On 01/04/2018 07:19 PM, Brent Busby wrote:
> >
> > I'm glad I'm not the only one who was worried about how this will affect
> > possible track count and plugin capacity. :)
>
> Depends on your DAW. In Ardour's case there is no context-switch. All
> tracks, Busses and FX run in the same process. So there won't be any
> direct effect.
>
> Low-latency I/O however (soundcard) will see additional overhead, as
> will JACK with multiple clients (one context switch per client).
>
is this correct? my impression is that KPTI makes user->kernel and
kernel->user switches more expensive tha they used to be, but does not
change the cost of a context switch that stays in the same ring mode.
so, basically, system calls cost more; context switches stay at about the
same cost.
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Received on Fri Jan 5 00:15:02 2018
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