LDoms System Details Test

This test gives an overview of CPU and memory resource usage on the Solaris physical server that is supporting one or more Logical Domains. This test reports the CPU and memory usage of the primary domain in relation to the physical resource availability at physical server (also referred to as the Solaris LDoms server). Using the results of this test, it is possible to determine the load on the Solaris physical server and also on the primary domain of the server.

Target of the test : A Solaris LDoms server

Agent deploying the test : An internal agent

Outputs of the test : One set of results for the primary domain and one for the Solaris host as a whole.

Configurable parameters for the test
Parameter Description

Test period

How often should the test be executed

Host

The host for which the test is to be configured.

Port

The port number at which the specified host listens. By default, the port is NULL.

KeonCommand

Keon is a security mechanism that can be used with a multitude of operating systems to provide a centralized base for user account and password management, user access and inactivity control, system integrity checking, and auditing. If the Keon security model is in use on the Solaris LDoms host being monitored, then this test may require special user privileges for executing the operating system commands. In such a case, specify the exact command that the test is permitted to execute, in the KeonCommand text box. For example, if the keon command to be executed by the test is sudo, specify sudo in the KeonCommand text box. Alternatively, you can even specify the full path to the sudo command in the KeonCommand text box. On the other hand, if a Keon security model is not in place, then set the KeonCommand parameter to none.

Detailed Diagnosis

To make diagnosis more efficient and accurate, the eG Enterprise embeds an optional detailed diagnostic capability. With this capability, the eG agents can be configured to run detailed, more elaborate tests as and when specific problems are detected. To enable the detailed diagnosis capability of this test for a particular server, choose the On option. To disable the capability, click on the Off option.

The option to selectively enable/disable the detailed diagnosis capability will be available only if the following conditions are fulfilled:

  • The eG manager license should allow the detailed diagnosis capability
  • Both the normal and abnormal frequencies configured for the detailed diagnosis measures should not be 0.
Measurements made by the test
Measurement Description Measurement Unit Interpretation

Physical CPU utilization

Indicates the percentage of physical CPU resources utilized. Two descriptors are reported for this test –for the “Primary” descriptor, this is the total CPU utilization of the primary (or control) domain, whereas the “Total” descriptor refers to the total CPU utilization on the Solaris server as a whole (including all the LDoms and the primary domain).

Percent

This measure clearly indicates where resource-intensive processes are executing – on the Solaris host or on the control domain?

If the processes executing on the control domain or on the Solaris host erode the physical CPU resource-base, it is bound to affect the resource allocations to the other guest domains, and ultimately impact the performance of applications executing on those guest domains.

Use the detailed diagnosis of this measure to determine the top CPU-consuming processes on the control domain or on the Solaris host, and kill rogue processes to ensure optimal CPU usage.

Virtual CPU utilization

This metric is available only for the “Primary” descriptor and it indicates the percentage of allocated CPU resources that the primary domain has utilized.

Percent

A very high value for this measure indicates excessive CPU utilization by that processor supported by the control domain. The CPU utilization may be high because a few processes are consuming a lot of CPU, or because there are too many processes contending for a limited resource. If adequate CPU resources are not available to the control domain, then the applications executing on the domain will experience slowdowns.

To check whether resource-intensive processes are executing on the primary domain, use the detailed diagnosis capability of this measure; this will list the top 10 CPU consumers on the control domain.

Note that this measure is available only for the Primary descriptor of this test.

Percent of virtual CPUs allocated to VMs

For the Primary descriptor, this indicates the ratio of the number of virtual CPUs allocated to the control domain to the total number of CPUs available on the Solaris physical server, expressed as a percentage.

For the Total descriptor, this measure is the ratio of the number of virtual CPUs allocated to all the VMs (Logical domains) to the total number of CPUs available on the Solaris physical server, expressed as a percentage.

Percent

The values of these measures are a clear indicator to whether the hypervisor has over-allocated or under-allocated CPU resources to the domains. 

Virtual CPUs allocated to VMs

For the Primary descriptor, this indicates the number of virtual CPUs allocated to the primary domain. For the Total descriptor, this measure indicates the number of virtual CPUs allocated to all the guest domains (excluding the primary domain) on the Solaris physical server

Number

Physical memory allocated to VMs

For the Primary descriptor, this indicates the physical memory size allocated to the primary domain. For the Total descriptor, this measure indicates the total physical memory that is allocated to other guest domains on the Solaris host.

GB

The value of these measures indicates how efficiently the hypervisor has allocated memory resources to the control domain and other guest domains. These values also enable administrators to figure out if the Solaris LDoms server is adequately sized in terms of memory resources to handle the load imposed by the logical domains.

Percent of physical memory allocated to VMs

For the Primary descriptor, this indicates the percentage of physical memory allocated to the primary domain. For the Total descriptor, this measure indicates the percentage of physical memory that is allocated to other guest domains on the Solaris host.

Percent

Total memory

Indicates the total memory on the Solaris host.

MB