This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / Documentation / fb / cyblafb / performance

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+Speed
+=====
+
+CyBlaFB is much faster than tridentfb and vesafb. Compare the performance data
+for mode 1280x1024-[8,16,32]@61 Hz.
+
+Test 1: Cat a file with 2000 lines of 0 characters.
+Test 2: Cat a file with 2000 lines of 80 characters.
+Test 3: Cat a file with 2000 lines of 160 characters.
+
+All values show system time use in seconds, kernel 2.6.12 was used for
+the measurements. 2.6.13 is a bit slower, 2.6.14 hopefully will include a
+patch that speeds up kernel bitblitting a lot ( > 20%).
+
++-----------+-----------------------------------------------------+
+|          |                   not accelerated                   |
+| TRIDENTFB +-----------------+-----------------+-----------------+
+| of 2.6.12 |     8 bpp      |     16 bpp      |     32 bpp      |
+|          | noypan |   ypan | noypan |   ypan | noypan |   ypan |
++-----------+--------+--------+--------+--------+--------+--------+
+|    Test 1 |  4.31 |   4.33 |   6.05 |  12.81 |  ----  |  ----  |
+|    Test 2 |  67.94 |  5.44 | 123.16 |  14.79 |  ----  |  ----  |
+|    Test 3 | 131.36 |  6.55 | 240.12 |  16.76 |  ----  |  ----  |
++-----------+--------+--------+--------+--------+--------+--------+
+|  Comments |                |                 | completely bro- |
+|          |                 |                 | ken, monitor    |
+|          |                 |                 | switches off    |
++-----------+-----------------+-----------------+-----------------+
+
+
++-----------+-----------------------------------------------------+
+|          |                     accelerated                     |
+| TRIDENTFB +-----------------+-----------------+-----------------+
+| of 2.6.12 |     8 bpp      |     16 bpp      |     32 bpp      |
+|          | noypan |   ypan | noypan |   ypan | noypan |   ypan |
++-----------+--------+--------+--------+--------+--------+--------+
+|    Test 1 |  ----  | ----  |  20.62 |   1.22 |  ----  |  ----  |
+|    Test 2 |  ----  | ----  |  22.61 |   3.19 |  ----  |  ----  |
+|    Test 3 |  ----  | ----  |  24.59 |   5.16 |  ----  |  ----  |
++-----------+--------+--------+--------+--------+--------+--------+
+|  Comments | broken, writing | broken, ok only | completely bro- |
+|          | to wrong places | if bgcolor is   | ken, monitor    |
+|          | on screen + bug | black, bug in   | switches off    |
+|          | in fillrect()   | fillrect()      |                 |
++-----------+-----------------+-----------------+-----------------+
+
+
++-----------+-----------------------------------------------------+
+|          |                   not accelerated                   |
+|   VESAFB  +-----------------+-----------------+-----------------+
+| of 2.6.12 |     8 bpp      |     16 bpp      |     32 bpp      |
+|          | noypan |   ypan | noypan |   ypan | noypan |   ypan |
++-----------+--------+--------+--------+--------+--------+--------+
+|    Test 1 |  4.26 |   3.76 |   5.99 |   7.23 |  ----  |  ----  |
+|    Test 2 |  65.65 |  4.89 | 120.88 |   9.08 |  ----  |  ----  |
+|    Test 3 | 126.91 |  5.94 | 235.77 |  11.03 |  ----  |  ----  |
++-----------+--------+--------+--------+--------+--------+--------+
+|  Comments | vga=0x307       | vga=0x31a      | vga=0x31b not   |
+|          | fh=80kHz        | fh=80kHz        | supported by    |
+|          | fv=75kHz        | fv=75kHz        | video BIOS and  |
+|          |                 |                 | hardware        |
++-----------+-----------------+-----------------+-----------------+
+
+
++-----------+-----------------------------------------------------+
+|          |                     accelerated                     |
+|  CYBLAFB  +-----------------+-----------------+-----------------+
+|          |      8 bpp      |     16 bpp      |     32 bpp      |
+|          | noypan |   ypan | noypan |   ypan | noypan |   ypan |
++-----------+--------+--------+--------+--------+--------+--------+
+|    Test 1 |  8.02 |   0.23 |  19.04 |   0.61 |  57.12 |   2.74 |
+|    Test 2 |  8.38 |   0.55 |  19.39 |   0.92 |  57.54 |   3.13 |
+|    Test 3 |  8.73 |   0.86 |  19.74 |   1.24 |  57.95 |   3.51 |
++-----------+--------+--------+--------+--------+--------+--------+
+|  Comments |                |                 |                 |
+|          |                 |                 |                 |
+|          |                 |                 |                 |
+|          |                 |                 |                 |
++-----------+-----------------+-----------------+-----------------+