Go Back   nV News Forums > Linux Support Forums > NVIDIA Linux

Newegg Daily Deals

Reply
 
Thread Tools
Old 07-09-10, 09:08 PM   #37
konst
Registered User
 
Join Date: May 2006
Posts: 57
Default Re: 95% CPU usage with driver 256.35 ?!!

Quote:
Originally Posted by StringCheesian View Post
Do you seriously believe that nvidia's glx is responsible for the majority of the security holes you're worried about, and that the rest of nvidia driver is relatively safe? If you have reason to believe that, then I guess using nvidia's driver without nvidia's glx could be rational. If you're merely guessing or hoping that is the case, then there is nothing rational about your configuration.

If you don't trust code that can't be inspected by the open source community, then it's silly to use nvidia's driver at all. Using nvidia's driver without its glx component still violates your own security principals.

If you're willing to make an exception for part of the nvidia driver, then you might as well make an exception for the entire driver including the glx part of it. That way you would enjoy fewer bugs with a better tested configuration.
Do you have any idea about security?

The Nvidia glx module requires you to allow it to execute code on the stack. If you don't know what that means then there's no point in discussing it any further.
konst is offline   Reply With Quote
Old 07-10-10, 05:07 AM   #38
Gusar
Registered User
 
Join Date: Apr 2006
Posts: 277
Default Re: 95% CPU usage with driver 256.35 ?!!

Quote:
Originally Posted by konst View Post
Do you have any idea about security?
Are you aware that you're loading a blob larger than the kernel itself, a blob that you can't inspect, into your kernel? And then you're worried about a userspace lib?
I'm with StringCheesian here: "Does not compute."
Gusar is offline   Reply With Quote
Old 07-10-10, 05:29 AM   #39
gonzo_s
Registered User
 
Join Date: Mar 2009
Posts: 58
Default Re: 95% CPU usage with driver 256.35 ?!!

Quote:
Originally Posted by stecklum View Post
My posting concerning the seemingly increased temperature seems to have been ignored by NVIDIA

http://www.nvnews.net/vbulletin/showthread.php?t=152199

It is just a flaw in the GUI version of nvidia-settings.
I have checked three places and they all display right info: 51 degrees.

Everything is OK for me (the GUI version, CLI command and another sensor widget I have on my desktop).
gonzo_s is offline   Reply With Quote
Old 07-10-10, 03:12 PM   #40
konst
Registered User
 
Join Date: May 2006
Posts: 57
Default Re: 95% CPU usage with driver 256.35 ?!!

Quote:
Originally Posted by Gusar View Post
Are you aware that you're loading a blob larger than the kernel itself, a blob that you can't inspect, into your kernel? And then you're worried about a userspace lib?
I'm with StringCheesian here: "Does not compute."
I use a custom kernel with extra security features. The Nvidia glx module wants to bypass those security features, at least one of them, to gain speed in opengl and I won't allow any bypass of that security feature therefore it won't load.
konst is offline   Reply With Quote
Old 07-12-10, 03:45 AM   #41
ctr
Registered User
 
Join Date: Nov 2009
Posts: 6
Default Re: 95% CPU usage with driver 256.35 ?!!

Guys, please stop complaining about konst's security standpoint. It has already been verified by StringCheesian that running the driver without the glx mod works and does not necessarily cause problems, so why are you commenting stuff you obviously have no clue about?
It's quite arrogant to call something whacky just because you have no idea about the thoughts behind it. If he wants so run in a more secure environment, then let him and don't try to force people to accept your very low security requirements.
ctr is offline   Reply With Quote
Old 07-13-10, 07:09 PM   #42
alexmurray
Registered User
 
Join Date: Mar 2010
Posts: 11
Default Re: 95% CPU usage with driver 256.35 ?!!

Quote:
Originally Posted by konst View Post
I use a custom kernel with extra security features. The Nvidia glx module wants to bypass those security features, at least one of them, to gain speed in opengl and I won't allow any bypass of that security feature therefore it won't load.
I find your security concerns a little odd - the NVIDIA GPU has DMA access to your main memory so you implicitly trust the hardware to not corrupt memory / create a security hole for your OS so why not also trust the driver as well?
alexmurray is offline   Reply With Quote
Old 07-15-10, 03:13 AM   #43
StringCheesian
Registered User
 
Join Date: May 2004
Posts: 27
Default Re: 95% CPU usage with driver 256.35 ?!!

konst, it would better define the problem if you could fill in the blank:
Quote:
CPU usage with nVidia's driver and non-nVidia glx: 95%
CPU usage with nVidia's driver and nVidia's glx: ___________
Your cooperation could open up new avenues of diagnosis.

For example, if you fill the blank with "95%", that would mean it doesn't matter what glx you use - it would rule out your use of non-nVidia glx as the cause. We could then move on to other possible causes.

If you fill the blank with "<5%", that would mean nVidia's driver has difficult to reproduce bugs when interacting with non-nVidia glx - maybe they only show up with a hardened kernel or with certain graphics card models.

This is why we have been asking you to try it just once with nVidia's glx.
StringCheesian is offline   Reply With Quote
Old 07-15-10, 07:04 PM   #44
konst
Registered User
 
Join Date: May 2006
Posts: 57
Default Re: 95% CPU usage with driver 256.35 ?!!

Quote:
Originally Posted by StringCheesian View Post
konst, it would better define the problem if you could fill in the blank:
Your cooperation could open up new avenues of diagnosis.

For example, if you fill the blank with "95%", that would mean it doesn't matter what glx you use - it would rule out your use of non-nVidia glx as the cause. We could then move on to other possible causes.

If you fill the blank with "<5%", that would mean nVidia's driver has difficult to reproduce bugs when interacting with non-nVidia glx - maybe they only show up with a hardened kernel or with certain graphics card models.

This is why we have been asking you to try it just once with nVidia's glx.
CPU usage with nVidia's driver and nVidia's glx: 5% with Nvidia kernel driver 195.36.24

I think this thread is done at least with driver 195.36.24
konst is offline   Reply With Quote

Old 07-16-10, 08:43 PM   #45
panzi
Registered User
 
Join Date: Jul 2009
Posts: 13
Default Re: 95% CPU usage with driver 256.35 ?!!

My X "only" takes 20% to 55% CPU on idle. (Using KDE4.4 with effects enabled, but disabling them doesn't change the CPU usage.)
Attached Files
File Type: gz nvidia-bug-report.log.gz (44.5 KB, 58 views)
panzi is offline   Reply With Quote
Reply


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 05:14 AM.


Powered by vBulletin® Version 3.7.1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright 1998 - 2014, nV News.