RT/Linux SCHED_RR/_FIXED to combat latency?

[Cedric Blancher]

Good morning!

We're experiencing rather very bad latency spikes on busy Linux
systems, for example if one machine is the jumphost (ssh -J) for a few
hundred connections, while at the same time handles CPU intensive
tasks.

Would RT/Linux SCHED_FIXED or SCHED_RR be of help in such a case, e.g.
put all ssh processes into the SCHED_FIXED scheduling class, with a
priority higher than the non-interactive compute processes?

Also, do I interpret it correctly that each forwarded TCP connection
has its own process?!

Ced
-- 
Cedric Blancher <cedric.blancher at gmail.com>
[https://plus.google.com/u/0/+CedricBlancher/]
Institute Pasteur