After reading Mike's release post about component on Rails via Cells, and his comment regarding rendering 1000 cells in sub-second time, I was curious about rendering time in IOWA for big piles of components. The two examples below render 1000 and 10000 components (each is a separate object), respectively.
Start test of 1000 components: Wed Jul 23 13:18:15 -0500 2008 15.121451
End test of 1000 components: Wed Jul 23 13:18:15 -0500 2008 15.154165
Time for 1000 components: 0.032714 (30567.9525585376 components/second)
Start test of 10000 components: Wed Jul 23 13:18:15 -0500 2008 15.154250
End test of 10000 components: Wed Jul 23 13:18:15 -0500 2008 15.527164
Time for 10000 components: 0.372914 (26815.8342137866 components/second)