diff options
| author | Krzysztof Helt <krzysztof.h1@wp.pl> | 2009-03-31 18:25:40 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-04-01 11:59:33 -0400 |
| commit | ddb53d48da5b0e691f35e703ac29118747f86c99 (patch) | |
| tree | bdf0f4a6f3e74a87e5b2ccb9530f708eed6258d2 /Documentation/fb/cyblafb/performance | |
| parent | ec549a0fdc32171b26677f1ef0b5309faa743362 (diff) | |
fbdev: remove cyblafb driver
A tridentfb driver has all the functionality of the cyblafb driver without
the bugs of the latter.
Changes to the tridentfb driver:
- FBINFO_READS_FAST added to the tridentfb. The cyblafb used a blitter
for scrolling which is faster than color expansion on Cyberblade
chipsets. The blitter is slower on a discrete Blade3D core. Use the
blitter for scrolling in the tridentfb only for integrated Blade3D
cores. Now, scrolling speed is about equal for the tridentfb and the
cyblafb.
- a copyright notice addition is done on request of Jani Monoses (the
first author of the tridentfb).
Tested on AGP Blade3D card and PCChips
M787CLR motherboard: VIA C3 cpu +
VT8601 north bridge (aka Cyberblade/i1).
Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Cc: "Jani Monoses" <jani@ubuntu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/fb/cyblafb/performance')
| -rw-r--r-- | Documentation/fb/cyblafb/performance | 79 |
1 files changed, 0 insertions, 79 deletions
diff --git a/Documentation/fb/cyblafb/performance b/Documentation/fb/cyblafb/performance deleted file mode 100644 index 8d15d5dfc6b3..000000000000 --- a/Documentation/fb/cyblafb/performance +++ /dev/null | |||
| @@ -1,79 +0,0 @@ | |||
| 1 | Speed | ||
| 2 | ===== | ||
| 3 | |||
| 4 | CyBlaFB is much faster than tridentfb and vesafb. Compare the performance data | ||
| 5 | for mode 1280x1024-[8,16,32]@61 Hz. | ||
| 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 | +-----------+-----------------+-----------------+-----------------+ | ||