Bad 3D performances in Oneiric compared to Natty

[Lucazade]

I get low frames per second using glxgears, the half of what I got with Natty and previous releases.
This behaviour is common for different graphics card (tested on Nvidia 250Gts, Ati radeon 7500 and Intel Gma500) so it seems not strictly related to video drivers but probably to some opengl libs (just guessing, please correct if I'm wrong).

I know that glxgears is not a good benchmark tool but usually results are the same in every Ubuntu release and now in Oneiric are really different.
I looked at glxgears because I felt that compiz and unity-3d are slower than in Natty, noticeable slower :)

attached two screenshots of glxgears in natty and oneiric with a nvidia250gts 1gb.. if needed I could provide for different gfx cards.

(I hope it is not a real regression but a false positive, or something, because otherwise it could be really bad if oneiric is released with this issue)

regards

[Lucazade (lucazade)]

during nvidia-current installation I get this output, I see some warnings.. maybe useful for debug

[Yotam Benshalom (benshalom)]

I also experience severe frame-rate drop in oneiric after upgrading from natty. I use the nvidia proprietary driver.

[Garth Johnson (garth83)]

I have the frame-rate drop with glxgears here, and it also seems that 2d performance, like scrolling in Firefox, seems to suffer as well. (Nvidia 9600gt)

This problem has occurred for me on three different drivers (275.x, 280.x, and 285.x)

[Lucazade (lucazade)]

now I get the same performance of Natty. bug seems solved, anyone can confirm?

[Garth Johnson (garth83)]

Not here. I'm actually getting worse performance than before with the latest updates, and tearing is horrendous.

[Garth Johnson (garth83)]

I just noticed that if my system is up for a while, like say a day, the longer it's up the worse performance gets. Once rebooted, performance goes back to normal, but tearing stays no matter what. Maybe a memory leak somewhere? The results are the same whether I'm running Gnome Shell or Unity/Compiz.

[Bryce Harrington (bryce)]

glxgears is not a benchmark.

http://wiki.cchtml.com/index.php/Glxgears_is_not_a_Benchmark

[RobertL (robert-loehning)]

"Won't fix"? Are you serious?

Of course, glxgears is not a benchmark. But if it runs with less than 1 frame per second, this indicates that something is seriously broken.

I have a rather old machine but with Natty, glxgears and OpenGL-screensaver moved at an acceptable speed. With Oneiric, glxgears shows less than 1 FPS and OpenGL is not usable at all. It's the same problem when running my updated installation or the Live-CD.

Please let me know if I can provide any further information to help you but don't call this "Won't fix".

[RobertL (robert-loehning)]

Do you use irqpoll? For me, this seems to be a symptom of https://bugs.launchpad.net/ubuntu/+source/linux/+bug/855199

[Daiji (david-joaquim)]

All persons that upgraded to oneiric in my company have this exact problem.
after one day of use, the computer is painfully unusable..

I've to reboot at least once a day..

What can I provide to find out where the problem is ?