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Example: Configuring CPU Utilization

The master administrator can enable CPU control and configure CPU utilization parameters. This example shows how to enable CPU utilization control and configure CPU utilization quotas and a control target.

Requirements

Before you begin:

Log in to the master logical system as the master administrator. See Understanding the Master Logical System and the Master Administrator Role.
Bind security profiles to the master logical system and user logical systems configured on the device. See Example: Configuring Logical Systems Security Profiles.

Overview

In this example, you enable CPU control and set the CPU control target to be 85 percent. You allocate reserved CPU quotas to the logical systems shown in Example: Creating User Logical Systems, Their Administrators, Their Users, and an Interconnect Logical System. The logical systems are bound to the security profiles shown in Table 1 and are assigned the reserved CPU quotas in the security profiles.

Table 1: Logical Systems, Security Profiles, and Reserved CPU Quotas

Logical System	Security Profile	Reserved CPU Quotas
root-logical-system (master)	master-profile	2 percent
ls-product-design	ls-design-profile	2 percent
ls-marketing-dept, ls-accounting-dept	ls-accnt-mrkt-profile	1 percent

Configuration

CLI Quick Configuration

To quickly configure this example, copy the following commands, paste them into a text file, remove any line breaks, change any details necessary to match your network configuration, and then copy and paste the commands into the CLI at the [edit] hierarchy level.

set system security-profile resources cpu-controlset system security-profile resources cpu-control-target 85 set system security-profile master-profile cpu reserved 2 set system security-profile ls-design-profile cpu reserved 2 set system security-profile ls-accnt-mrkt-profile cpu reserved 1

Step-by-Step Procedure

The following example requires you to navigate various levels in the configuration hierarchy. For instructions on how to do that, see Using the CLI Editor in Configuration Mode in the Junos OS CLI User Guide .

To configure CPU utilization control parameters:

Log in to the master logical system as the master administrator and enter configuration mode.
[edit]admin@host> configureadmin@host#
Enable CPU control.
[edit system security-profile resources]admin@host# set cpu-control
Configure the CPU control target.
[edit system security-profile resources]admin@host# set cpu-control-target 85
Configure the reserved CPU quotas in the security profiles.
[edit system]admin@host# set security-profile security-profile master-profile cpu reserved 2admin@host# set security-profile security-profile ls-design-profile cpu reserved 2admin@host# set security-profile security-profile ls-accnt-mrkt-profile cpu reserved 1

Results

From configuration mode, confirm your configuration by entering the show system security-profile command. If the output does not display the intended configuration, repeat the \ instructions in this example to correct the configuration.

For brevity, this show command output includes only the configuration that is relevant to this example. Any other configuration on the system has been replaced with ellipses (...).

[edit]admin@host# show system security-profile resources {cpu-control;cpu-control-target 85;}ls-accnt-mrkt-profile {...cpu {reserved 1;}logical-system [ ls-marketing-dept ls-accounting-dept ];}ls-design-profile {...cpu {reserved 2;}logical-system ls-product-design;}master-profile {...cpu {reserved 2;}logical-system root-logical-system;}

If you are done configuring the device, enter commit from configuration mode.

Verification

Confirm that the configuration is working properly.

Verifying CPU Utilization

Verifying CPU Utilization

Purpose

Display the configured reserved CPU quota, the actual CPU usage, and the drop rate.

Action

From operational mode, enter the show system security-profile cpu logical-system all command.

admin@host> show system security-profile cpu
logical-system all

CPU control: TRUE
CPU control target: 85.00%
logical system name    profile name    CPU name    usage(%)    reserved(%)    drop rate(%)
root-logical-system    master-profile CP              0.10%          2.00%           0.00%
root-logical-system    master-Profile SPU             0.25%          2.00%           0.00%
ls-product-design      ls-design-profile CP           0.53%          2.00%           0.00%
ls-product-design      ls-design-profile SPU          0.26%          2.00%           0.00%
ls-marketing-dept      ls-acct-mrkt-profile CP        0.10%          1.00%           0.00%
ls-marketing-dept      ls-acct-mrkt-profile SPU       0.15%          1.00%           0.00%
ls-accounting-dept     ls-acct-mrkt-profile CP        0.23%          1.00%           0.00%
ls-accounting-dept     ls-acct-mrkt-profile SPU       0.34%          1.00%           0.00%