environment:
Windows7SP1 x64
Core2Quad Q9450 2.6GHz / DDR2-800 8GB RAM


#benchmark.avs
ImageReader("test_1280x720.bmp", 0, 999) #RGB32
BlackmanResize(720, 480)
Spline64Resize(1920, 1080)
GaussResize(512, 384)

$ for i in {1..3}; do avs2avi benchmark.avs -c null -o n; done

results:
              2.5.8                   2.6.0α2
1st   00:02:26.256(6.84fps)    00:01:10.753(14.13fps)
2nd   00:02:26.256(6.84fps)    00:01:10.764(14.13fps)
3rd   00:02:26.257(6.84fps)    00:01:10.753(14.13fps)　　(CPU: about 30%）


-----------------------------------------------------------------------------

environment:
Ubuntu 10.10 / wine 1.3.14
Core2Duo T7300@2GHz / DDR-800 2GB RAM


#benchmark.avs
ImageSource("Z:\home\chikuzen\Pictures\1920x1080.bmp", 0, 999) #RGB32
BlackmanResize(720, 480)
Spline64Resize(1920, 1080)
GaussResize(512, 384)

$ for i in {1..3}; do wine avs2avi benchmark.avs -c null -o n; done

results:
            2.5.8                    2.6.0α2
1st   00:03:40.414 (4.54fps)   00:01:56.483 (8.58fps)
2nd   00:03:32.149 (4.71fps)   00:01:56.722 (8.57fps)
3rd   00:03:31.894 (4.72fps)   00:01:56.471 (8.59fps)