[lxc-users] slow game graphics in lxc container

[manik sheeri]

I got it fixed. First, we have to make sure that the user inside lxc container
belongs to the group video. To do this, do the following: ( assuming user
is named ubuntu )

sudo usermod -a -G video ubuntu

Then, add the following in the container config file i.e.
/var/lib/lxc/mk7i_container/config. My container name is mk7i_container.

#Video DRI
lxc.cgroup.devices.allow = c 226:* rwm

##/dev/dri mounts
lxc.mount.entry = /dev/dri dev/dri none bind,optional,create=dir

Now, restart the container. And the graphics should work fine.


>
> ---------- Forwarded message ----------
> From: manik sheeri <sheeri185adidam at gmail.com>
> To: lxc-users at lists.linuxcontainers.org
> Cc:
> Date: Thu, 22 Sep 2016 14:53:59 -0700
> Subject: [lxc-users] slow game graphics in lxc container
> I have a privileged `lxc` container running on Ubuntu 16.0.4 LTS.
>
> I have noticed that the graphics of our game are very sluggish in
> container compared to when running on host directly.
>
> Could anyone point a reference as to what could be the cause ?
>
> So I ran `glxgears` application inside the container. Though the
> application ran fine but I saw the following info + errors on console:
>
>     libGL error: failed to open drm device: Permission denied
>     libGL error: failed to load driver: nouveau
>     4057 frames in 5.0 seconds = 811.356 FPS
>     4238 frames in 5.0 seconds = 847.557 FPS
>     4251 frames in 5.0 seconds = 850.081 FPS
>     4254 frames in 5.0 seconds = 850.743 FPS
>     4253 frames in 5.0 seconds = 850.431 FPS
>     4255 frames in 5.0 seconds = 850.949 FPS
>     4253 frames in 5.0 seconds = 850.450 FPS
>     4254 frames in 5.0 seconds = 850.733 FPS
>     4250 frames in 5.0 seconds = 849.960 FPS
>     4247 frames in 5.0 seconds = 849.254 FPS
>     4246 frames in 5.0 seconds = 849.129 FPS
>
>
> _______________________________________________
> lxc-users mailing list
> lxc-users at lists.linuxcontainers.org
> http://lists.linuxcontainers.org/listinfo/lxc-users
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.linuxcontainers.org/pipermail/lxc-users/attachments/20160923/704d9572/attachment.html>