About the Mix Control
The mix control allows you to adjust the percentage of load that is distributed among tests, browser types, or network types in a load test scenario. You adjust the percentages by moving sliders.
When you move a slider, the percentage values of all available items change. If you have more than two items, the amount you add or remove is distributed evenly among the other items. It is possible to override this behavior. If you select the check box in the lock column for a particular item, you lock the specified percentage for that item. Then, when you move a slider, the amount you add or remove is only applied to any remaining unlocked items.
The Distribute button is used to allocate the percentages equally among all items. For example, if you have three items, clicking Distribute sets the percentages to 34, 33, and 33.
The Distribute button overrides any items that are locked.
It is also possible to type the percentages directly into the % column instead of using the sliders. If you enter a percentage value directly, the other items will not adjust automatically.
The sliders are disabled when the total does not add up to 100%, or when the values entered into the % column are decimals.
When you enter percentages manually, you should make sure that the sum of all items is 100%. When you save a mix, if the sum is not 100%, you will be prompted to accept the percents as they are, or to go back and adjust them. If you choose to accept them as they are, they will be prorated to 100%. For example, if you have two items and you manually set them to 80% and 40%, the first item will be set to 66.67% (80 divided by 120) and the second item will be set to 33.33% (40 divided by 120).