SRCDS is not getting realtime priority

[Malvo]

I've followed all the guides regarding setting up SRCDS so it runs with the realtime process scheduler (chrt -r 20). When I launch the server (rc.local automatically or manually), the SRCDS process does get realtime priority for about 2 seconds, before quickly being demoted to standard priority, I watch it through htop to see this.

A quick check using 'chrt -p *pid*' confirms this, just after starting the process, it reads:

"pid 1376's current scheduling policy: SCHED_RR
pid 1376's current scheduling priority: 20"

However, seconds later, performing the same command will give:

"pid 1376's current scheduling policy: SCHED_OTHER
pid 1376's current scheduling priority: 0"

Evidently, for whatever reason, something is causing the server process to demote itself from realtime priority, and it will stay this way continuously.

Could anyone offer some advice as to why this is happening and how to fix it? I have not seen anyone else having this issue on these forums. Thanks!

[Edge100x]

That's a new one for me. Do you have any other scripts running in the background that might be influencing it?

[Malvo]

Nope, no scripts at all. Aside from the SRCDS installation it's just a clean install of Ubuntu 14.04.