Hi,
We configured a systemd environment, but we cannot have real time access
when running an application.
We have defined a xorg.service which starts the X, and every script
runned gets under systemd/xorg.service control group, and because this
control group does not have real time access (cpu.rt_runtime_us contains
0 value), we cannot run real time applications.
I tryied to create a system_at_marius.service containing:
[Unit]
Description=Systemd for marius user
[Service]
User=marius
PAMName=systemd
ExecStart=/bin/systemd --user
[Install]
WantedBy=multi-user.target
But it won't start:
Starting Systemd for marius user...
<29>systemd[1]: systemd_at_marius.service: main process exited,
code=exited, status=1
<29>systemd[1]: Unit systemd_at_marius.service entered failed state.
Is there anyway that I could give real time access to some control
groups (or services)? I know there is LimitRTTIME variable which I set
it to infinity, but the behavior does not change.
I also tried to create a realtime group, added it to
/etc/security/limits.d/99-realtime.conf
@realtime - rtprio 99
@realtime - memlock unlimited
And add marius user to this group. But that also did not change anything.
Best Regards,
Marius
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