The readiness metric is a succinct representation of how well a network path is expected to handle data-intensive applications. It is based on a predictive model developed by AppNeta. Data assessments are tests used to determine a network path’s readiness by evaluating its ability to handle activities like ftp transfers, backups, and recovery. These types of activities primarily demand bandwidth for long, steady, TCP transfers under relatively constant network conditions (i.e., packet loss, routes, and bandwidth are not varying appreciably). Data assessments are not as relevant to voice, video, best-effort, or transactional data.

A data assessment runs diagnostics tests on multiple paths at once, with the goal of determining your network’s ability to deliver data-intensive applications. Data assessments return familiar metrics (loss, latency, jitter, etc.), but they also generate a ‘readiness’ value.

Readiness

Conceptually, readiness is like MOS for data, but with key differences: MOS is based on current performance and is typically related to the symptomatic evaluation of the network path—that is, what the loss, latency and jitter impose upon the quality of the service. Readiness, on the other hand, leverages the diagnostic capability of APM to discover the origins of loss, latency, and jitter, and then characterizes the range of performance possible in the presence of any issues.

The basis for readiness is throughput, which is the critical measure of how well a data-intensive application is performing. Modeling is used to estimate throughput at layer 4, based on layer 3 behaviors and set of parameters that represent a typical TCP configuration. This estimate considers total capacity and utilization, and the effect of loss, latency, and jitter on TCP congestion control. Assuming no performance bottlenecks at higher layers, it also reflects the throughput that is available to the application at layer 7.

If you want to influence your readiness score, increase throughput. Keep in mind however that readiness is not throughput, nor is it a linear function of throughput.

Create a data assessment

To create a data assessment:

  1. Navigate to Delivery > Data Assessments.
  2. Click + New Data Assessment.
  3. Enter an Assessment Name.
  4. Select the paths to include in the assessment.
  5. Click Start Assessment.
    • The assessment is created and starts running. The status shows: .

View a data assessment

To view a data assessment:

  1. Navigate to Delivery > Data Assessments.
  2. Click the completed assessment you want to view (status shows: ).
    • The data assessment summary is displayed.

Edit a data assessment

To edit a data assessment:

  1. Navigate to Delivery > Data Assessments.
  2. For the assessment you want to edit, select > Edit.
  3. Make any changes to the data assessment configuration.
  4. Click Start Assessment.
    • The assessment begins. The status shows: .

Delete a data assessment

To delete a data assessment:

  1. Navigate to Delivery > Data Assessments.
  2. For the assessment you want to delete, select > Delete.
  3. Click OK.
    • The assessment is deleted.

Stop a data assessment

To stop a data assessment:

  1. Navigate to Delivery > Data Assessments.
  2. For the currently running assessment you want to stop (status shows: ), select > Stop.
    • The assessment stops. The status shows: .

Re-reun a data assessment

To re-run a data assessment:

  1. Navigate to Delivery > Data Assessments.
  2. For the assessment you want to re-run, select > Run Assessment Again.
  3. Make any changes to the data assessment configuration.
  4. Click Start Assessment.
    • The assessment begins. The status shows: .

Pause a data assessment

To pause a data assessment:

  1. Navigate to Delivery > Data Assessments.
  2. For the currently running assessment you want to pause (status shows: ), select > Pause.
    • The assessment pauses. The status shows: .

Resume a paused data assessment

To resume a paused data assessment:

  1. Navigate to Delivery > Data Assessments.
  2. For the paused assessment you want to resume (status shows: ), select > Resume.
    • The assessment resumes. The status shows: .