Throughput Test Options#

../../_images/throughput_panel.png

Fig. 22 Throughput test options#

Common Options#

  • Duration Type

    Defines how to control the test duration, either by time or by frame count.

  • Duration

    The duration of each test trial.

  • Iterations

    The number of times to repeat each test trial with the same set of test parameters.

Rate Iteration Options#

  • Initial Rate

    The starting rate in percent used by the iteration.

  • Minimum Rate

    The minimum rate in percent. If the iteration reaches this value the test will be FAILed.

  • Maximum Rate

    The maximum rate in percent. If the iteration reaches this value the test will PASS.

  • Resolution Rate

    Defines the minimum difference between two rate iterations. If the difference between the next and the last rate iteration is less than this value the test is stopped and the last successful rate is reported.

  • Rate Result Scope

    Determines the scope of the rate result.

    • The Common Result setting will iterate towards a single throughput rate result for all ports, which will be the lowest common rate found. This is the default setting.

    • If Per Source-Port Result setting is selected the Xena2544 will attempt to iterate a separate rate value for each source port. This will obviously produce a (potentially different) result for each source port.

  • Enable Fast Search

    The default iteration algorithm used is a standard binary search, where the next attempted rate is found as the mean value of the sum of last passed and the last failed rate. If the fast search property is enabled the algorithm will take the measured loss rate into account when iterating down.This may in many cases result in a substantial reduction in the number of trials needed to reach the throughput rate result.

Pass Criteria#

  • Use Pass Threshold

    Selecting this property will allow you to specify a pass threshold value. If the test result is below this threshold the tested will be FAILed.

  • Pass Threshold

    The pass threshold explained above.

  • Acceptable Loss

    Allow you to specify an acceptable loss in percent of the port rate. Normally this would be zero but for certain network types (such as satellite links) a certain amount of frame loss is acceptable.

Test Data#

  • Collect Latency/Jitter

    If enabled, latency and jitter will also be collected.