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Old 06-28-10, 12:52 AM   #13
gradinaruvasile
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Default Re: 95% CPU usage with driver 256.35 ?!!

Try with the full driver with GLX and see if works that way. If it works, then the problem is that you dont use the full driver... you might as well use nv or nouveau if you disable glx...

BTW glxgears uses opengl for rendering.
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Old 06-28-10, 01:05 AM   #14
konst
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Default Re: 95% CPU usage with driver 256.35 ?!!

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Originally Posted by gradinaruvasile View Post
Try with the full driver with GLX and see if works that way. If it works, then the problem is that you dont use the full driver... you might as well use nv or nouveau if you disable glx...

BTW glxgears uses opengl for rendering.
Like I said I don't use any opengl apps. The nv driver doesn't do video scaling so video look bad with it. The nouveau driver can't do duallink DVI well yet.
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Old 06-28-10, 05:02 AM   #15
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Default Re: 95% CPU usage with driver 256.35 ?!!

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I don't use the GLX module cause it's a security risk and since Nvidia won't release the source code for the driver or specs for the card then we won't know what potential security problems there are or how to fix them promptly.
I think you need professional help from a therapist.
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Old 06-28-10, 05:52 AM   #16
gradinaruvasile
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Default Re: 95% CPU usage with driver 256.35 ?!!

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Like I said I don't use any opengl apps. The nv driver doesn't do video scaling so video look bad with it. The nouveau driver can't do duallink DVI well yet.
Oh sorry about the glxgears thing i mixed up posts...

Anyway, what is the security risk with the glx module? I am just curious...
Try the full driver and see if the situation is the same.
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Old 06-28-10, 08:19 AM   #17
zim2dive
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Default Re: 95% CPU usage with driver 256.35 ?!!

FWIW, I have seen 95% Xorg 2-3 times over the past 3-4 months, given the release schedule, you can assume that means it was on 2-3 different drivers.

I was using the full driver.

No logs to post at this time. Will capture one next time I see it happen.
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Old 06-28-10, 09:18 AM   #18
AaronP
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Default Re: 95% CPU usage with driver 256.35 ?!!

What were you doing when the CPU usage went to 95%? Do you happen to know which X client was causing the load? X doesn't usually just use CPU time on its own.
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Old 06-28-10, 09:27 AM   #19
konst
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Default Re: 95% CPU usage with driver 256.35 ?!!

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What were you doing when the CPU usage went to 95%? Do you happen to know which X client was causing the load? X doesn't usually just use CPU time on its own.

I don't know which client was causing it but I'm using KDE 4.4.4 so could be anything in KDE.
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Old 06-28-10, 09:35 AM   #20
zim2dive
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Default Re: 95% CPU usage with driver 256.35 ?!!

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What were you doing when the CPU usage went to 95%? Do you happen to know which X client was causing the load? X doesn't usually just use CPU time on its own.
I saw it twice? hit 95% CPU. To my knowledge I wasn't doing anything. This box serves 95% as my mail/web server and 10% HTPC duties. So most of the time I'm doing nothing on it...at some point later I would notice the box seemed to be under heavy load and would then notice the issue.

The most recent time, I think I saw Xorg was chewing up memory instead of CPU cycles (I think (fuzzy memory) this was after I force killed FireFox, which I thought was the most likely culprit)

Sorry I can't provide more detail.

If/when this happens, the machine gets sluggish to the extreme. What is the best thing to kill to free up enough bandwidth to get a copy of the log, and which logs would you want?

EDIT: I'm running Gnome (Ubuntu 10.04, fairly default install)
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Old 06-28-10, 12:47 PM   #21
Ralph
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Default Re: 95% CPU usage with driver 256.35 ?!!

Note that System Monitor on KDE 4.4.x provides values of the CPU load totally meaningless; often, the CPU load average remains fixed at 100%, while the load of each core seems correct.

It may be necessary to close and reopen System Monitor several times until you get more realistic values of the CPU load average.
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Old 06-28-10, 10:26 PM   #22
gradinaruvasile
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Default Re: 95% CPU usage with driver 256.35 ?!!

Use top in a terminal.
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Old 06-29-10, 01:45 AM   #23
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Default Re: 95% CPU usage with driver 256.35 ?!!

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Use top in a terminal.
or better yet: htop
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Old 06-29-10, 01:49 AM   #24
konst
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Default Re: 95% CPU usage with driver 256.35 ?!!

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or better yet: htop
That's what I used.
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