Memory Usage Test

This test auto-discovers the components of the target Cisco SD-WAN and for each component, reports the memory utilization. Using this test administrators can be proactively alerted to the component that is causing potential resource contention.

Target of the test : Cisco SD-WAN

Agent deploying the test : An external agent

Outputs of the test : One set of the results for each component of the target Cisco SD-WAN being monitored

Configurable parameters for the test
Parameter	Description
Test period	How often should the test be executed
Host	The IP address of the host for which this test is to be configured.
Port	Specify the port at which the specified Host listens to. By default, this is NULL.
Username	By default, the eG agent executes REST APIs on the target appliance to collect the required metrics. For the eG agent to execute the REST APIs, a special user with monitoring privilege is required. Specify the name of such a user in this text box.
Password	Specify the password corresponding to the user mentioned in the Username text box here.
Confirm Password	Confirm the Password by retyping it here.
REST API Port	By default, the REST API Port is set to none. This implies that by default, this test connects to the default port to execute the REST API commands and collect the required metrics. In some environments however, a different port can be used to execute the REST API commands. In such case, specify that port number against the REST API Port text box.
SSL	The eG agent collects performance metrics by executing REST APIs on the target appliance. Typically, the REST APIs can be invoked through HTTP or HTTPS mode. By default, the eG agent invokes REST APIs using the HTTPS mode. This is why, the SSL flag is set to Yes by default. If the target appliance is not SSL-enabled, then the REST APIs can be accessed through HTTP mode only. In this case, set the SSL flag to No.

Measurements made by the test
Measurement	Description	Measurement Unit	Interpretation
Total memory	Indicates the total memory allocated to this component.	GB
Used memory	Indicates the amount of memory that is already utilized by this component.	GB	A value close to the Total memory indicates that the component is running out of memory resources. Administrators are required to add additional memory resources.
Free memory	Indicates the amount of memory available for use in this component.	GB	A sudden decrease in this value could indicate an unexpected/sporadic spike in the memory utilization of the component. A consistent decrease however could indicate a gradual, yet steady erosion of memory resources, and is hence a cause for concern.
Cached memory	Indicates the amount of cached memory allocated to this component.	GB
Buffered memory	Indicates the amount of buffer memory available for this component.	GB
Memory utilization	Indicates the percentage of memory utilized by this component.	Percent	Compare the value of this measure across components to identify the component that is facing potential memory crunch. A value close to 100 indicates that the components are facing severe memory contention. Administrators need to analyze such memory contentions and add additional memory resources as and when required.