Xorg high CPU lately

A.J.Rouvoet · 2015-03-30 14:30:54

Only since a week or two Firefox has started to eat a lot (25-35%) of CPU when e.g. scrolling.
At the same time Xorg has also started to consume unusual amounts of CPU (15-35%, instead of the usual 5% max).

Edit: Xorg seems to be the biggest problem atm

I'm on an Intel I7 haswell with integrated GPU.
I'm not sure what triggered this and if I can fix it by config. Curious if other people noticed something similar and/or have a solution.

Last edited by A.J.Rouvoet (2015-03-31 08:25:08)

davidm · 2015-03-31 02:45:05

Just a shot in the dark but are you using the extension Video DownloadHelper? I noticed the new 5.x version seems to give me problems with making everything slow.

If not try disabling the other extensions temporarily to see if the problem goes away and to isolate it.

parades · 2015-03-31 02:46:37

I noticed it earlier today. I had some of the tweaks enabled (e.g. http.pipelining), disabled them and it seems to be better. It's highly likely that this is a coincidence though, since those are super popular options.

A.J.Rouvoet · 2015-03-31 08:23:41

davidm wrote:

Just a shot in the dark but are you using the extension Video DownloadHelper?

parades wrote:

I had some of the tweaks enabled {...}

Nope, and nope. I paid close attention yesterday, and it seems that Xorg is actually worse most of the time. ~30% CPU is not uncommon!

parades · 2015-03-31 12:11:24

Can you post the output of

glxinfo | grep render

?

A.J.Rouvoet · 2015-04-01 10:29:21

parades wrote:

Can you post the output of
glxinfo | grep render
?

direct rendering: Yes
    GLX_MESA_multithread_makecurrent, GLX_MESA_query_renderer, 
    GLX_MESA_multithread_makecurrent, GLX_MESA_query_renderer, 
OpenGL renderer string: Mesa DRI Intel(R) Haswell Mobile 
    GL_ARB_conditional_render_inverted, GL_ARB_conservative_depth, 
    GL_MESA_texture_signed_rgba, GL_NV_conditional_render, GL_NV_depth_clamp, 
    GL_ARB_conditional_render_inverted, GL_ARB_conservative_depth, 
    GL_NV_conditional_render, GL_NV_depth_clamp, GL_NV_light_max_exponent, 
    GL_OES_element_index_uint, GL_OES_fbo_render_mipmap,

Last edited by A.J.Rouvoet (2015-04-01 10:29:34)

parades · 2015-04-01 13:46:21

Hmm, yeah I thought maybe it would be due to defaulting to software rendering, as my X CPU usage went up when I had a driver issue, buit it seems like that's not the case. Maybe try reinstalling "xf86-video-intel"?

Last edited by parades (2015-04-01 13:46:35)

Arch Linux

#1 2015-03-30 14:30:54

Xorg high CPU lately

#2 2015-03-31 02:45:05

Re: Xorg high CPU lately

#3 2015-03-31 02:46:37

Re: Xorg high CPU lately

#4 2015-03-31 08:23:41

Re: Xorg high CPU lately

#5 2015-03-31 12:11:24

Re: Xorg high CPU lately

#6 2015-04-01 10:29:21

Re: Xorg high CPU lately

#7 2015-04-01 13:46:21

Re: Xorg high CPU lately

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