[Freeswitch-users] Realtime kernels - CONFIG_PREEMPT_RT

Piotr Gregor piotrek.gregor at gmail.com
Mon May 8 19:53:30 UTC 2017


Hi Karl,

RT kernels are not about speed, but about guaranteed biggest latency, i.e.
bounded latency in the kernel.
That highest latency gets significantly improved if RT is set up correctly
(which is not so straightforward).
In case of VoIP the most latency in playing audio stream comes from network
congestion, dropouts, etc.,
therefore it is external to the kernel and most likely there is not that
many degrees of freedom in this space
which real time system could improve.

Piotr
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