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Two charts can be displayed side-by-side to compare the waterfalls of any two VUs during selected iterations.

To turn-on, the dual Waterfall view, check the Compare box (a) on the toolbar. The 2nd pair of numeric text boxes (b) will appear. Select the 2nd VU / Iteration. The second panel (c ) with the graph will appear on the right.

Note: Sometimes, you need to click Refresh (d) on the toolbar after you change a VU or iteration.

The initial timeline of the two charts has the same scale for easier comparison. Example on the figure: transactions on the left and right charts completed in 0.7 and 5.48 seconds, respectively. Both charts will display a 5.48 seconds timeline.

A snapshot of KPI of the time of the page/transaction request will be displayed below each waterfall (e). For example, in the figure:

  • the left waterfall took place when two users accessed an application under the test with a hit rate of 14.92 req/sec
  •  the right waterfall took place when 12 users accessed an application under the test with hit rate 35.6 req/sec

To swap the charts, click the  Swap button (f) on the toolbar.

Auto-Synch mode

By default, the scrolling and zooming in the charts are synchronized. When you zoom or vertically scroll either of the charts, the opposite chart will automatically keep the same vertical zoom/scroll position, so the corresponding requests in both charts are always aligned.

To turn Auto-Synch mode off, un-check the Auto-Synch on the toolbar (g) or right-click and un-check the Auto-Synch box (h). After that, you can zoom and scroll charts independently.

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