forked from Minki/linux
44637a12f8
This is a major update to the cyblafb framebuffer driver. Most
of the stuff has been tested in the mm tree.
Main advantages:
============
- vxres > xres support
- ywrap and xpan support
- much faster for almost all modes (e.g. 1280x1024-16bpp
draws more than 41 full screens of text instead of about 25
full screens of text per second on authors Epia 5000)
- module init/exit code fixed
- bugs triggered by console rotation fixed
- lots of minor improvements
- startup modes suitable for high performance scrolling
in all directions
This diff also contains a lot of white space fixes.
No side effects are possible, only one single graphics core is affected.
Signed-off-by: Knut Petersen <Knut_Petersen@t-online.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
80 lines
3.8 KiB
Plaintext
80 lines
3.8 KiB
Plaintext
Speed
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=====
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CyBlaFB is much faster than tridentfb and vesafb. Compare the performance data
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for mode 1280x1024-[8,16,32]@61 Hz.
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Test 1: Cat a file with 2000 lines of 0 characters.
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Test 2: Cat a file with 2000 lines of 80 characters.
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Test 3: Cat a file with 2000 lines of 160 characters.
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All values show system time use in seconds, kernel 2.6.12 was used for
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the measurements. 2.6.13 is a bit slower, 2.6.14 hopefully will include a
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patch that speeds up kernel bitblitting a lot ( > 20%).
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+-----------+-----------------------------------------------------+
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| | not accelerated |
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| TRIDENTFB +-----------------+-----------------+-----------------+
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| of 2.6.12 | 8 bpp | 16 bpp | 32 bpp |
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| | noypan | ypan | noypan | ypan | noypan | ypan |
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+-----------+--------+--------+--------+--------+--------+--------+
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| Test 1 | 4.31 | 4.33 | 6.05 | 12.81 | ---- | ---- |
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| Test 2 | 67.94 | 5.44 | 123.16 | 14.79 | ---- | ---- |
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| Test 3 | 131.36 | 6.55 | 240.12 | 16.76 | ---- | ---- |
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+-----------+--------+--------+--------+--------+--------+--------+
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| Comments | | | completely bro- |
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| | | | ken, monitor |
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| | | | switches off |
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+-----------+-----------------+-----------------+-----------------+
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+-----------+-----------------------------------------------------+
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| | accelerated |
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| TRIDENTFB +-----------------+-----------------+-----------------+
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| of 2.6.12 | 8 bpp | 16 bpp | 32 bpp |
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| | noypan | ypan | noypan | ypan | noypan | ypan |
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+-----------+--------+--------+--------+--------+--------+--------+
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| Test 1 | ---- | ---- | 20.62 | 1.22 | ---- | ---- |
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| Test 2 | ---- | ---- | 22.61 | 3.19 | ---- | ---- |
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| Test 3 | ---- | ---- | 24.59 | 5.16 | ---- | ---- |
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+-----------+--------+--------+--------+--------+--------+--------+
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| Comments | broken, writing | broken, ok only | completely bro- |
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| | to wrong places | if bgcolor is | ken, monitor |
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| | on screen + bug | black, bug in | switches off |
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| | in fillrect() | fillrect() | |
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+-----------+-----------------+-----------------+-----------------+
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+-----------+-----------------------------------------------------+
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| | not accelerated |
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| VESAFB +-----------------+-----------------+-----------------+
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| of 2.6.12 | 8 bpp | 16 bpp | 32 bpp |
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| | noypan | ypan | noypan | ypan | noypan | ypan |
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+-----------+--------+--------+--------+--------+--------+--------+
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| Test 1 | 4.26 | 3.76 | 5.99 | 7.23 | ---- | ---- |
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| Test 2 | 65.65 | 4.89 | 120.88 | 9.08 | ---- | ---- |
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| Test 3 | 126.91 | 5.94 | 235.77 | 11.03 | ---- | ---- |
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+-----------+--------+--------+--------+--------+--------+--------+
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| Comments | vga=0x307 | vga=0x31a | vga=0x31b not |
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| | fh=80kHz | fh=80kHz | supported by |
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| | fv=75kHz | fv=75kHz | video BIOS and |
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| | | | hardware |
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+-----------+-----------------+-----------------+-----------------+
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+-----------+-----------------------------------------------------+
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| | accelerated |
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| CYBLAFB +-----------------+-----------------+-----------------+
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| | 8 bpp | 16 bpp | 32 bpp |
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| | noypan | ypan | noypan | ypan | noypan | ypan |
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+-----------+--------+--------+--------+--------+--------+--------+
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| Test 1 | 8.02 | 0.23 | 19.04 | 0.61 | 57.12 | 2.74 |
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| Test 2 | 8.38 | 0.55 | 19.39 | 0.92 | 57.54 | 3.13 |
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| Test 3 | 8.73 | 0.86 | 19.74 | 1.24 | 57.95 | 3.51 |
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+-----------+--------+--------+--------+--------+--------+--------+
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| Comments | | | |
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+-----------+-----------------+-----------------+-----------------+
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