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doc: add core queries in power example guide

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This patch adds some minor updates for the vm_power_manager and guest_cli
example applications.

Now that the virtio-serial channels between vm_power manager and
the guest_cli has bi-directional capability, there are some new commands.

Firstly, the command in vm_power_manager to enable queries for a given VM:

  * set_query {vm_name} enable|disable

Then, commands to query the frequencies and capabilities of the cores
in the VM:

  * query_cpu_freq {core_num}|all
  * query_cpu_caps {core_num}|all

Signed-off-by: David Hunt <david.hunt@intel.com>
Acked-by: John McNamara <john.mcnamara@intel.com>
This commit is contained in:
David Hunt 2019-11-15 12:51:24 +00:00 committed by David Marchand
parent 64a525aad9
commit f433878a4f
1 changed files with 22 additions and 0 deletions
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22
doc/guides/sample_app_ug/vm_power_management.rst
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@ -309,6 +309,12 @@ A number of commands can be issued via the CLI in relation to VMs:
set_pcpu {vm_name} {vcpu} {pcpu}
Enable query of physical core information from a VM:
.. code-block:: console
set_query {vm_name} enable|disable
Manual control and inspection can also be carried in relation CPU frequency scaling:
Get the current frequency for each core specified in the mask:
@ -746,6 +752,22 @@ Where {core_num} is the lcore and channel to change frequency by scaling up/down
set_cpu_freq {core_num} up|down|min|max
To query the available frequences of an lcore, use the query_cpu_freq command.
Where {core_num} is the lcore to query.
Before using this command, please enable responses via the set_query command on the host.
.. code-block:: console
query_cpu_freq {core_num}|all
To query the capabilities of an lcore, use the query_cpu_caps command.
Where {core_num} is the lcore to query.
Before using this command, please enable responses via the set_query command on the host.
.. code-block:: console
query_cpu_caps {core_num}|all
To start the application and configure the power policy, and send it to the host:
.. code-block:: console