high cpu usage on glxgears

[outburstx]

I noticed another issue about this, but it was closed.

When I run "optirun64 glxgears", I get about 100% CPU Usage. If I pass anything other than "xv" to the "-c" option of vglrun, I get even higher usage (approaching 200%), and of course higher fps. Running glxgears without optirun64 uses about 8% CPU.

I know Martin commented that he doesn't have this problem, so perhaps you could suggest a way to debug it?

I'm using the newest NVIDIA drivers (275.09.07) on 64-bit Fedora 14 on an Alienware M11x-r2 laptop.

Could it be an issue with the yum-installed version of VirtualGL? Maybe I should build/install it from source? Could it be an issue with the NVIDIA drivers? Should I try older ones?

Does anyone else have this problem?

[xeno-by]

same here: 8-10% cpu usage without optirun, ~90% cpu usage with optirun asus u31jg, ubuntu 11.04 x64, nvidia 270.41.06 never had virtualgl previously (i.e. it got installed with bumblebee), didn't try with older nvidia drivers

[outburstx]

update: I tried building/installing VirtualGL from source, and got the same issue (~90% CPU issue with optirun64 glxgears)

[MrMEEE]

It's natural that the jpeg/proxy gives higher load on the cpu(s), as it encodes every frame into jpeg, instead of sending/processing them in raw format.. This is great if VirtualGL is used in a real Server/Client setup.. but not needed in bumblebee.. this is partly why I recommend xv..

As far as I can see, xv gives same or better performance and also solves problems with a little lag in action-packed games like 1st-person shooters (Urban Terror, Counter strike)..

[outburstx]

MrMEEE: understood, but is the ~90% CPU usage using xv normal? You commented earlier that you do not experience this.

[MrMEEE]

@outburstx

I would not expect you to have 90% usage using xv... I got something like 20-30% on xv..

Maybe the problem here is the configuration of the primary x-server (the intel one)...

if I "misconfigure" the primary x-server, by letting it load the nvidia files, I loose 3d effects in KDE and optirun64 glxgears goes to about 80-85% cpu usage...

[xeno-by]

@MrMEEE

How do I properly configure the x-server? My /etc/X11 folder does not contain any xorg.conf at all. All it has - the xorg.conf.nvidia file that comes from bumblebee. I run Asus U31JG with Intel Pentium P6100 (http://ark.intel.com/Product.aspx?id=50175).

[MrMEEE]

If you have used my version of bumblebee (under ubuntu), then it should already be configured... It's not not configuration in the xorg.conf, but configuration of the libraries being loaded (/etc/alternatives), that is the problem...

[xeno-by]

Well, I did. I cloned this repo a few days ago and ran install.sh. Anything else that I need to do? upd. How do I verify that everything has been configured properly?

[MrMEEE]

Nope... then you should be fine..

[xeno-by]

How do I verify that everything has been configured properly?

Here's my install log (I've uninstalled bumblebee, did git pull and ran install.sh again): http://pastebin.com/K6Lg1pNJ What else should I do? Maybe some symlinks got messed up, and we can fix them?

[MrMEEE]

that should be fine... does glxgears work without optirun???

[xeno-by]

yep, here's the log of running glxgears with and without optirun: http://pastebin.com/gdZcJMKb

[xeno-by]

also, I've noticed a suspicious "link group gl_conf is broken" message during previous uninstallation of bumblebee, but forgot to copy/paste the log. that's why I've uninstalled bumblebee once again to get the log and the exact message: http://pastebin.com/PhzMMBsJ. check the line number 26

[xeno-by]

also, what did you mean by "if I "misconfigure" the primary x-server, by letting it load the nvidia files"? how did you do that? could you, please, explain how this part of bumblebee works?