Am Freitag, den 23.04.2010, 11:07 +0200 schrieb Manne Merak:

On 04/23/2010 09:19 AM, Robert Howard wrote:

...

Works fine here. KDE4.4+Compiz with a pair of GTX 295's. Can't tell any difference between new and old.

On Apr 23, 2010 2:32 AM, "Manne Merak" wrote:

I see there are some discussions going on the nvidia, KDE and arch forums about the performance of KDE 4.4 and latest nvidia driver, no results yet as I can see. My current setup with 190.53 works fast and snappy (no special xorg param); but updating to anything later drops performance by a factor, so I resisted upgrading nvidia. Now with the latest kernel update I cannot keep the 190.53 driver. Anyone have a solution for performance tweaking the latest KDE and nvidia combo? (I dont want to get too out of sync with the updates).

Manne

Yes, it is a KDE rendering problem. Compiz works fine, so could be a possibility if all else fails.

Manne

I have updated to 195.36.15-2. And many things got quite worse. I have no idea where to search for details or find out why it is going sooo slow in some programs. But it happened. I can't use an older driver because of kernel. And so I have to live with worse performance until next driver update. For Example: I play Tibia. normaly I got a Framerate of at least 50 fps and much more. Now it stucks on 15fps. And so are some other programs. But, like I allready told, I have no idea how to debug more about this thing. Another one: I also have in mind that glxgears, started without parameters on default size, gets me around 45000 fps and now it has abouot 15000 fps. Baumi

On Fri, 23 Apr 2010 16:00:08 +0200, Manne Merak wrote:

On 04/23/2010 03:35 PM, Patrick Baumgart wrote: I did an update and it was not that bad - small performance hit - but not big enough to go back to Compiz. Wow, 45000fps, what card are you using? I get 1800fps with my 8600M GT and Kwin effects enabled, my Dell is getting old!

glxgears is a very bad benchmark, so the framerate one can get with it is irrelevant [1]. I have ~3800 fps with it on my Quadro 14OM, yet games work perfectly fine and it can decode full HD videos thanks to VDPAU. Patrick, concerning your driver problem, you may want to have a look at this: http://bugs.gentoo.org/301318 They have a patch (from the nvnews.net forum) which allows the 190.53 driver to be compiled against a 2.6.33 kernel. Regards [1] http://wiki.cchtml.com/index.php/Glxgears_is_not_a_Benchmark -- Thomas/Schnouki

On 04/23/2010 02:19 AM, Robert Howard wrote:

Works fine here. KDE4.4+Compiz with a pair of GTX 295's. Can't tell any difference between new and old.

On Apr 23, 2010 2:32 AM, "Manne Merak" wrote:

I see there are some discussions going on the nvidia, KDE and arch forums about the performance of KDE 4.4 and latest nvidia driver, no results yet as I can see. My current setup with 190.53 works fast and snappy (no special xorg param); but updating to anything later drops performance by a factor, so I resisted upgrading nvidia. Now with the latest kernel update I cannot keep the 190.53 driver. Anyone have a solution for performance tweaking the latest KDE and nvidia combo? (I dont want to get too out of sync with the updates).

Manne

New install kde 4.4 and latest nvidia driver w/nvidia 8600 card. I can definitely tell that performance has tanked. Compiz cube is much more sluggish than it ever has been. I haven't had time to dive into it, but you're not dreaming if you think it is slower. I haven't tried on the box with 8800 in it yet, but I expect similar results. -- David C. Rankin, J.D.,P.E. Rankin Law Firm, PLLC 510 Ochiltree Street Nacogdoches, Texas 75961 Telephone: (936) 715-9333 Facsimile: (936) 715-9339 www.rankinlawfirm.com

On 04/23/2010 10:13 AM, Gaurish Sharma wrote:

On 04/23/2010 12:04 PM, Manne Merak wrote:

...

I see there are some discussions going on the nvidia, KDE and arch forums about the performance of KDE 4.4 and latest nvidia driver, no results yet as I can see. My current setup with 190.53 works fast and snappy (no special xorg param); but updating to anything later drops performance by a factor, so I resisted upgrading nvidia. Now with the latest kernel update I cannot keep the 190.53 driver. Anyone have a solution for performance tweaking the latest KDE and nvidia combo? (I dont want to get too out of sync with the updates).

Manne

Hi, you can upgrade to nvidia 195.36 as the issue has been fixed.from the changelog[1]

* Fixed a performance regression with non-antialiased text in KDE4.

[1] http://www.nvidia.com/object/linux_display_amd64_195.36.15.html http://www.nvidia.com/object/linux_display_amd64_195.36.15.html

I saw that, but some discussions on the NVIDIA forums suggests that that was not the problem. I will update and see; can go back to Compiz if KWin is unusable. Thanks Manne