TuneD recently added API support for accessing TuneD via the Dbus interface.

That API works well, but it is cumbersome, and customers will likely request a more simple interface.

For example, one method is via dbus-send, as shown here:

• # dbus-send --system --print-reply --dest="com.redhat.tuned" /Tuned com.redhat.tuned.control.instance_acquire_devices string:cpu10,cpu11,cpu12,cpu13 string:cpus_performance

Another method is via busctl, as shown here:

• # busctl call com.redhat.tuned /Tuned com.redhat.tuned.control instance_acquire_devices ss cpu10,cpu11,cpu12,cpu13 cpus_performance

Jaroslav suggested the above syntax could be simplified if the "tuned-adm" binary was used. For example, the above dbus-send and busctl commands could be done with:

• # tuned-adm instance_acquire_devices cpu10,cpu11,cpu12,cpu13 cpus_performance

While at it, it would be good to find a way to simplify the cpu enumeration, (similar to the way the TuneD plugins do it: "devices=${f:cpulist2devs:1-10,12,15-20}"

Thank you.
Joe Mario