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Discovery Speed Slider Bar

This control, also known as the discovery throttle, controls how fast discovery occurs and how much network and

system resources are consumed for discovery by controlling the:

• Number of discovery threads that are allowed to run at any one time.

• Delay in between the communicating devices during a network ping sweep, in milliseconds.

NOTE: Each tick on the throttle control equals 10% and the range is from 10% to 100%. By default, in OpenManage

Essentials, the discovery throttle is set at 60%. After an upgrade from IT Assistant, the throttle control remains at its

previously set value.

Multithreading

Dell OpenManage Essentials improves upon the optimized parallel threading implementation in the Network Monitoring

Service introduced in IT Assistant.

As the discovery process is very I/O intensive, you can optimize the process by making it a parallel operation, where

threads running in parallel (known as multi-threading) are sending requests and handling responses to several devices

at once.

To an extent, the more threads that run in parallel, each communicating to a different device, the faster is the discovery;

barring overall high network congestion or latency. The discovery process, by default, allows a maximum of 32 threads

to run in parallel (or concurrently) at any one time for discovery.

To control the number of parallel threads executing, move the discovery throttle control either left or right. When set at

the maximum, 32 parallel threads are actually allowed to run. If the throttle is at 50%, only 16 threads are allowed to run

at any one time.

As the discovery service is optimized for parallel threading operations, the system can utilize more system resources

even at the same throttle setting. It is recommended that you monitor the system resources so that a satisfactory trade-

off is made between discovery speed versus system resources available for OpenManage Essentials. Lowering or

increasing the throttle depends on the system it is running on and the available resources. Note that the discovery

service may take up to several minutes to adjust to a new throttle setting.

NOTE: For minimal discovery times on medium to large size networks (several hundred to several thousand

devices), it is recommended that you install OpenManage Essentials services on a multi-processor system.

Scheduling Inventory

1. Click Manage → Discovery and Inventory → Common Tasks → Inventory Schedule.

2. In Inventory Schedule Settings, do the following:

a) Select desired schedule parameters.

b) (Optional) You may adjust the task speed slider for faster task execution; however, more system resources are

consumed.

Configuring Status Polling Frequency

You can configure OpenManage Essentials to check the health status of all discovered devices that have a means of

health instrumentation such as OpenManage Server Administrator. The status can be scheduled at a given interval

using Status Polling so that health status is always current. To configure status polling:

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