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Real-time management

Real-time management

CPU isolation and tuned profile

The tuned profile used by SEAPATH is available in /etc/tuned/seapath-rt-host/tuned.conf.

To verify the isolated CPUs, take a look at the kernel command line:

cat /proc/cmdline

Cgroup usage

If real-time and non-real-time cgroups are configured, you can verify the processes running inside of them (the VMs) by looking at the associated slide. The CPU range is also described with the slide:

  • machine.slice is the default cgroup for all VMs

  • machine-rt.slice is used for real-time virtual machine

  • machine-nort is used for non-real-time virtual machines

All these cgroups can be investigated with systemctl status <cgroup> command.

VM CPU usage

The number of CPUs used by a virtual machine can be investigated with the vcpu* Libvirt commands. Refer to Libvirt documentation.