Silk Performer CloudBurst Credit licensing

Flexible licensing with credits

Credits are a virtual currency that can be used to purchase CloudBurst testing services, available from the Silk Performer Cloud Portal or your sales representative.

The billing process follows a pre-paid model: You first purchase Credits and then decide how and when you want to use them.

How it works

Download the full details.

Credits must be purchased in advance.

Credits can be used for Virtual User license fees and for Cloud infrastructure (load-test agents) rental fees.

Virtual User License Fees

These are calculated based on the maximum number of concurrently active Virtual Users in a 24-hour testing period. The fee per active virtual user is dependent on the application type under test:

  • 1 Web (Protocol) Virtual Users requires 1 Credit/24h
  • 1 Web browser-driven (AJAX) Virtual User requires 2 Credits/24h
  • 1 Java or .NET Virtual User requires 2 Credits/24h

Virtual user cost protection: When your application doesn’t scale to meet the loads you anticipated, virtual user price protection means you only pay for what you have used.

Cloud Infrastructure Rental Fees

The infrastructure rental fee is comprised of a passive and an active fee. The passive fee is charged for the time an agent runs, the active fee is only charged for the time the running agent is used to execute a load test. During the execution of a load test, both the passive and the active fee are charged.

  • Passive Cloud agents: 5 Credits per hour
  • Active Cloud agents: 5 Credits per hour
  • Each hour started is charged as a full hour

Sample load-test scenario:

  • Virtual Users:
    5000 Web Virtual Users executed on 2 days require 10,000 Credits (5000 Web VU * 2 days * 1 Credit/24h)
  • Infrastructure:
    10 agents running 5h per day, 3h per day used for load test execution require 800 Credits (10 agents * 2 days * 5h * 5 BC passive fee + 10 agents * 2 days * 3h * 5 BC active fee)

Get visibility within Silk Performer

  • Cost estimation for planned load-test: estimates how many credits you'll likely be charged
  • Account Balance & usage report: A detailed Credits balance sheet is displayed following each test

CloudBurst agents limits

  • Get 30 Cloud load-test agents per Cloud region or up to 100 instances in total by default
  • Automatically detect how many virtual users can be run on one instance (cloud or on premise) for a specific script

Please contact supportline or your sales representative if you need more instances for your load-test.