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Old 08-30-10, 04:55 PM   #13
TaintedKernel
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Join Date: Oct 2009
Posts: 7
Default Re: nvidia 256.52 xorg-server 1.9.0 performance regression

Same here:
with:
<match target="font">
<edit mode="assign" name="antialias">
<bool>true</bool>
</edit>

in fonts.conf I get:
GtkEntry - time: 0.04
GtkComboBox - time: 1.42
GtkComboBoxEntry - time: 1.09
GtkSpinButton - time: 0.12
GtkProgressBar - time: 0.14
GtkToggleButton - time: 0.16
GtkCheckButton - time: 0.07
GtkRadioButton - time: 0.16
GtkTextView - Add text - time: 2.13
GtkTextView - Scroll - time: 1.26
GtkDrawingArea - Lines - time: 0.45
GtkDrawingArea - Circles - time: 1.04
GtkDrawingArea - Text - time: 8.65
GtkDrawingArea - Pixbufs - time: 0.25
---
Total time: 16.98


and with:
<match target="font">
<edit mode="assign" name="antialias">
<bool>false</bool>
</edit>
I get:
GtkEntry - time: 0.02
GtkComboBox - time: 1.09
GtkComboBoxEntry - time: 0.90
GtkSpinButton - time: 0.15
GtkProgressBar - time: 0.12
GtkToggleButton - time: 0.12
GtkCheckButton - time: 0.06
GtkRadioButton - time: 0.20
GtkTextView - Add text - time: 0.15
GtkTextView - Scroll - time: 0.10
GtkDrawingArea - Lines - time: 0.47
GtkDrawingArea - Circles - time: 0.76
GtkDrawingArea - Text - time: 0.24
GtkDrawingArea - Pixbufs - time: 0.08
---
Total time: 4.45


Amazing! Hell yea! Finally after so long time I can now use my preferred “Tahoma with bitmap-optics” at reasonable speed!

But seriously: I hope NVIDIA now knows to turn on acceleration for both: smoothed and non-smoothed fonts at the same time.

So a cool feature can be turned on: Gui-Elements in Tahoma non-smoothed and all other (more fluid reading purposes) with in fine-smoothed fonts.



System:
openSUSE 11.3
Linux-x86_64
2.6.35.1-12bfs (custom compiled with brainf***scheduler patch)
Xserver 1.9.0 (10900000)
Nvidia 256.52
KDE 4.4 Platform Version 4.5.00 (KDE 4.5.0)
and comipz 0.86
(quad core Q95550; Nvidia 240)
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Old 08-30-10, 05:06 PM   #14
Fackamato
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Default Re: nvidia 256.52 xorg-server 1.9.0 performance regression

Just for the record:

Code:
GtkPerf 0.40 - Starting testing: Mon Aug 30 22:04:54 2010

GtkEntry - time:  0.02
GtkComboBox - time:  0.53
GtkComboBoxEntry - time:  0.33
GtkSpinButton - time:  0.06
GtkProgressBar - time:  0.03
GtkToggleButton - time:  0.04
GtkCheckButton - time:  0.04
GtkRadioButton - time:  0.17
GtkTextView - Add text - time:  0.52
GtkTextView - Scroll - time:  0.09
GtkDrawingArea - Lines - time:  0.22
GtkDrawingArea - Circles - time:  0.32
GtkDrawingArea - Text - time:  0.34
GtkDrawingArea - Pixbufs - time:  0.06
 --- 
Total time:  2.78
Core2Duo 2.4, 8600M GT 256.52, 2.6.35-pf (-ck)
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Old 08-30-10, 05:22 PM   #15
gradinaruvasile
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Default Re: nvidia 256.52 xorg-server 1.9.0 performance regression

Hm. I dont know if i can trust this test. It varies from 2.77 to 8.32 (!) on Athlon II 250 @3 GHz/nvidia IGP 8200.
In the meantime i was messing around with the cpufreq governors so it is tied to CPU.
If i set the governors to ondemand i have 3.23, set to performance (full speed), 2.77. And sometimes 8 ish...
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Old 08-30-10, 05:36 PM   #16
TaintedKernel
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Default Re: nvidia 256.52 xorg-server 1.9.0 performance regression

small correction here:
Everything is ark full slow on KDE 4.5 with non-antialiased fonts (e.g. scrolling).
So i will switch back and dream the dream of accelerated fonts in "bitmap-style".
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Old 08-30-10, 11:50 PM   #17
Nephyrin
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Default Re: nvidia 256.52 xorg-server 1.9.0 performance regression

+1

Using 1.9 and 256.52, gnome-terminal rapes my system when scrolling fast. I was just compiling something and the fast-scrolling-spam was bringing my desktop to <10fps, whereas it was silky smooth in 1.8+256.44

Downgrading now, I hope this gets fixed soon. My desktop hasn't sucked this hard since the <180.x days
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Old 08-31-10, 03:39 AM   #18
dae
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Default Re: nvidia 256.52 xorg-server 1.9.0 performance regression

Quote:
Originally Posted by TaintedKernel View Post
small correction here:
Everything is ark full slow on KDE 4.5 with non-antialiased fonts (e.g. scrolling).
So i will switch back and dream the dream of accelerated fonts in "bitmap-style".
Interresting; for me the performance is acceptable. However, I don't use bitmap fonts, only non-antialiased truetype fonts. I say acceptable, because I still feel the overall desktop experience is slower with xorg-server 1.9.0, but at least it's usable (which it isn't when I used anti-aliased fonts).

FYI, regarding the slow bitmap font rendering; here's the QT bug (closed, so I suppose we'll never see a fix for it): http://bugreports.qt.nokia.com/browse/QTBUG-7255
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Old 08-31-10, 03:04 PM   #19
ioni
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Default Re: nvidia 256.52 xorg-server 1.9.0 performance regression

still not fixed in 256.53. i'm attaching my log
Attached Files
File Type: gz nvidia-bug-report.log.gz (68.2 KB, 95 views)
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Old 09-02-10, 10:24 AM   #20
bearoso
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Default Re: nvidia 256.52 xorg-server 1.9.0 performance regression

My guess is that 1.9 is doing something differently with the text and is hitting an unaccelerated code-path.
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Old 09-02-10, 10:26 AM   #21
hl_
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Default Re: nvidia 256.52 xorg-server 1.9.0 performance regression

Quote:
Originally Posted by dae View Post
Interresting; for me the performance is acceptable. However, I don't use bitmap fonts, only non-antialiased truetype fonts.
Note that TrueType fonts can also contain bitmaps (and quite a few do, for certain pixel sizes).
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Old 09-02-10, 10:57 AM   #22
Ross Alexander
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Default Re: nvidia 256.52 xorg-server 1.9.0 performance regression

This problem seems to be card specific since I have a GeForce 9600 GT (G94) and it is fine on 1.9.0 with AA fonts but with my GeForce 9500 (G96) it runs like a slouth with AA fonts. The issue is not with composition since I've tested it just running xterm (with Xft support enabled) and metacity and turning off composition in metacity makes no noticable difference.

The G96 runs fine on 1.8.2 with AA fonts. Both systems are using identical binaries from source compilation. I've attached bug reports from each systems. I would blame my system as it has a lot of old versions on it but as other people have reported similar problems I'm fairly certain it is somewhere in the render acceleration paths.
Attached Files
File Type: gz 9500GT.nvidia-bug-report.log.gz (52.2 KB, 96 views)
File Type: gz 9600GT.nvidia-bug-report.log.gz (40.8 KB, 91 views)
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Old 09-06-10, 11:33 AM   #23
torturedutopian
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Default Re: nvidia 256.52 xorg-server 1.9.0 performance regression

With the following setup :

- Ubuntu 10.10 beta, xserver 1.9
- nvidia drivers 256.53
- GF 9800M GTX

Display is *extremely* slow (scrolling in a web page, moving windows, etc.), with & without composition. Actually it turned out this is due to the antialiasing text rendering (games & videos are still smooth).

It didn't occur with the same drivers in Ubuntu 10.04.

Here's a relevant bug report : https://bugs.launchpad.net/bugs/629910

Cheers !
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Old 09-07-10, 04:38 PM   #24
bearoso
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Default Re: nvidia 256.52 xorg-server 1.9.0 performance regression

There's still no text acceleration with 260.19.04.
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