Based on kernel version 2.6.29. Page generated on 2009-03-25 22:22 EST.
1 Speed 2 ===== 3 4 CyBlaFB is much faster than tridentfb and vesafb. Compare the performance data 5 for mode 1280x1024-[8,16,32][AT]61 Hz[DOT] 6 7 Test 1: Cat a file with 2000 lines of 0 characters. 8 Test 2: Cat a file with 2000 lines of 80 characters. 9 Test 3: Cat a file with 2000 lines of 160 characters. 10 11 All values show system time use in seconds, kernel 2.6.12 was used for 12 the measurements. 2.6.13 is a bit slower, 2.6.14 hopefully will include a 13 patch that speeds up kernel bitblitting a lot ( > 20%). 14 15 +-----------+-----------------------------------------------------+ 16 | | not accelerated | 17 | TRIDENTFB +-----------------+-----------------+-----------------+ 18 | of 2.6.12 | 8 bpp | 16 bpp | 32 bpp | 19 | | noypan | ypan | noypan | ypan | noypan | ypan | 20 +-----------+--------+--------+--------+--------+--------+--------+ 21 | Test 1 | 4.31 | 4.33 | 6.05 | 12.81 | ---- | ---- | 22 | Test 2 | 67.94 | 5.44 | 123.16 | 14.79 | ---- | ---- | 23 | Test 3 | 131.36 | 6.55 | 240.12 | 16.76 | ---- | ---- | 24 +-----------+--------+--------+--------+--------+--------+--------+ 25 | Comments | | | completely bro- | 26 | | | | ken, monitor | 27 | | | | switches off | 28 +-----------+-----------------+-----------------+-----------------+ 29 30 31 +-----------+-----------------------------------------------------+ 32 | | accelerated | 33 | TRIDENTFB +-----------------+-----------------+-----------------+ 34 | of 2.6.12 | 8 bpp | 16 bpp | 32 bpp | 35 | | noypan | ypan | noypan | ypan | noypan | ypan | 36 +-----------+--------+--------+--------+--------+--------+--------+ 37 | Test 1 | ---- | ---- | 20.62 | 1.22 | ---- | ---- | 38 | Test 2 | ---- | ---- | 22.61 | 3.19 | ---- | ---- | 39 | Test 3 | ---- | ---- | 24.59 | 5.16 | ---- | ---- | 40 +-----------+--------+--------+--------+--------+--------+--------+ 41 | Comments | broken, writing | broken, ok only | completely bro- | 42 | | to wrong places | if bgcolor is | ken, monitor | 43 | | on screen + bug | black, bug in | switches off | 44 | | in fillrect() | fillrect() | | 45 +-----------+-----------------+-----------------+-----------------+ 46 47 48 +-----------+-----------------------------------------------------+ 49 | | not accelerated | 50 | VESAFB +-----------------+-----------------+-----------------+ 51 | of 2.6.12 | 8 bpp | 16 bpp | 32 bpp | 52 | | noypan | ypan | noypan | ypan | noypan | ypan | 53 +-----------+--------+--------+--------+--------+--------+--------+ 54 | Test 1 | 4.26 | 3.76 | 5.99 | 7.23 | ---- | ---- | 55 | Test 2 | 65.65 | 4.89 | 120.88 | 9.08 | ---- | ---- | 56 | Test 3 | 126.91 | 5.94 | 235.77 | 11.03 | ---- | ---- | 57 +-----------+--------+--------+--------+--------+--------+--------+ 58 | Comments | vga=0x307 | vga=0x31a | vga=0x31b not | 59 | | fh=80kHz | fh=80kHz | supported by | 60 | | fv=75kHz | fv=75kHz | video BIOS and | 61 | | | | hardware | 62 +-----------+-----------------+-----------------+-----------------+ 63 64 65 +-----------+-----------------------------------------------------+ 66 | | accelerated | 67 | CYBLAFB +-----------------+-----------------+-----------------+ 68 | | 8 bpp | 16 bpp | 32 bpp | 69 | | noypan | ypan | noypan | ypan | noypan | ypan | 70 +-----------+--------+--------+--------+--------+--------+--------+ 71 | Test 1 | 8.02 | 0.23 | 19.04 | 0.61 | 57.12 | 2.74 | 72 | Test 2 | 8.38 | 0.55 | 19.39 | 0.92 | 57.54 | 3.13 | 73 | Test 3 | 8.73 | 0.86 | 19.74 | 1.24 | 57.95 | 3.51 | 74 +-----------+--------+--------+--------+--------+--------+--------+ 75 | Comments | | | | 76 | | | | | 77 | | | | | 78 | | | | | 79 +-----------+-----------------+-----------------+-----------------+