Re: [luau] Dual Processors & Linux

[Thomas Ryan Gordon Sr]

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Rodney Kanno wrote:

| I have a dual processor computer, but I am getting the impression
| that Linux is using only one processor. I am running SUSE 9.0, with
| the 2.4.21-166-smp4G kernel. Doing a cat /proc/cpuinfo shows that
| Linux is detecting 2 cpu's. However, when I try to run video, the
| video is very choppy and pretty much un-watchable. Ksim also shows
| only one cpu in use (cpu0), but displays cpu0 and cpu1. This system
| was giving me problems before where for some reason, the BIOS would
| detect only 1 processor. When this occured, video playback was fixed.
| Could the BIOS alsobe causing Linux to use only one processor (but
| detect two) as well? Or is there a setting somewhere in Linux to make
| use of both? I can dual boot to windows, and windows shows both
| processors in use from task manager. Any help would be greatly
| appreciated!

Multiple processessors usually only benefit multiple processes.  And no
single process shuld go any faster than one processor.  What does top
show you?  As far as choppy video is concerned this sort of information
is useful:  How fast are your processors?  What is the cpu utilization
or top processes while paying video?  What are you using to play the
video?  What bitrate/codec is the video?  What video drivers are you using?

Adios,
Tom
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Re: [luau] Dual Processors & Linux

[Rodney Kanno]

My processors are AMD MP 2100...about 1.8 GHZ each.
When I try to play video (mpg), I have nothing else running and I have 
~800MB free memory, out of 1020MB. While the video is playing, CPU 
utilization does not go above 37%. I am using Kaffeine, and also noatun. 
Both give me choppy video. I am not sure what bitrate the video is, but 
the file size is only 526KB. I am using the most current NVIDIA driver.


Rodney

Thomas Ryan Gordon Sr wrote:


Rodney Kanno wrote:

| I have a dual processor computer, but I am getting the impression
| that Linux is using only one processor. I am running SUSE 9.0, with
| the 2.4.21-166-smp4G kernel. Doing a cat /proc/cpuinfo shows that
| Linux is detecting 2 cpu's. However, when I try to run video, the
| video is very choppy and pretty much un-watchable. Ksim also shows
| only one cpu in use (cpu0), but displays cpu0 and cpu1. This system
| was giving me problems before where for some reason, the BIOS would
| detect only 1 processor. When this occured, video playback was fixed.
| Could the BIOS alsobe causing Linux to use only one processor (but
| detect two) as well? Or is there a setting somewhere in Linux to make
| use of both? I can dual boot to windows, and windows shows both
| processors in use from task manager. Any help would be greatly
| appreciated!

Multiple processessors usually only benefit multiple processes.  And no
single process shuld go any faster than one processor.  What does top
show you?  As far as choppy video is concerned this sort of information
is useful:  How fast are your processors?  What is the cpu utilization
or top processes while paying video?  What are you using to play the
video?  What bitrate/codec is the video?  What video drivers are you 
using?


Adios,
Tom



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Re: [luau] Dual Processors & Linux

[Thomas Ryan Gordon Sr]

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Rodney Kanno wrote:

| My processors are AMD MP 2100...about 1.8 GHZ each. When I try to
| play video (mpg), I have nothing else running and I have ~800MB free
| memory, out of 1020MB. While the video is playing, CPU utilization
| does not go above 37%. I am using Kaffeine, and also noatun. Both
| give me choppy video. I am not sure what bitrate the video is, but
| the file size is only 526KB. I am using the most current NVIDIA
| driver.
|
What video driver is the player (Kaffeine/Xine) using for output? xv or
x11 or something else?  have you tried changing it?  Have you tried
disabling audio or playing another mpeg (like a dvd, etc.) or non-mpeg
(xvid file etc.).  Try using the sdl/smpeg player ("plaympeg") from the
command prompt.  You can get that here:
http://www.lokigames.com/development/smpeg.php3 (or from your suse
repository or the like).

Tomato
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Re: [luau] Dual Processors & Linux

[Warren Togami]

Rodney Kanno wrote:

My processors are AMD MP 2100...about 1.8 GHZ each.
When I try to play video (mpg), I have nothing else running and I have 
~800MB free memory, out of 1020MB. While the video is playing, CPU 
utilization does not go above 37%. I am using Kaffeine, and also noatun. 
Both give me choppy video. I am not sure what bitrate the video is, but 
the file size is only 526KB. I am using the most current NVIDIA driver.





I can say with almost complete certainty that your problem is not 
anything to do with SMP, but perhaps the media player software, codecs, 
or drivers specific to your particular hardware.


Warren

Re: [luau] Dual Processors & Linux

[Rodney Kanno]

If it does not have anything to do with SMP (whic I hope) then why would 
video playback "work" when my BIOS detects only 1 processor? Can it be 
attributed to my BIOS/motherboard since it is so tempermental?

Rodney

>
> I can say with almost complete certainty that your problem is not 
> anything to do with SMP, but perhaps the media player software, 
> codecs, or drivers specific to your particular hardware.
>
> Warren
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Re: [luau] Dual Processors & Linux

[Warren Togami]

You are saying that it works if you remove one processor from your 
motherboard, or you are talking about a different computer entirely?


Does it work if you boot into the "UP" uniprocessor kernel?  What brand 
and version of Linux?


Warren

Rodney Kanno wrote:

If it does not have anything to do with SMP (whic I hope) then why would
video playback "work" when my BIOS detects only 1 processor? Can it be
attributed to my BIOS/motherboard since it is so tempermental?

Rodney

 >
 > I can say with almost complete certainty that your problem is not
 > anything to do with SMP, but perhaps the media player software,
 > codecs, or drivers specific to your particular hardware.
 >
 > Warren
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 > [EMAIL PROTECTED] 
 > http://videl.ics.hawaii.edu/mailman/listinfo/luau
 >

Re: [luau] Dual Processors & Linux

[Rodney Kanno]

No it's the same computer. For some reason, my BIOS is tempermental and 
sometimes it detects only one of the two processors. But when it detects 
only one, the watching video works fine. When my BIOS detects two 
processors, watching video does not work anymore (using the same 
programs). So both processors are still physically in the motherboard, 
but the BIOS is only detecting one. I am running the latest NVIDIA 
drivers, but I don't think the video card driver is the problem, becuase 
when I switch to the generic driver (nv) I get the same thing.

I am running SUSE 9.0 (8.2 was the same), and I think SUSE installed 
only the smp kernel?

Rodney


Warren Togami wrote:

> You are saying that it works if you remove one processor from your 
> motherboard, or you are talking about a different computer entirely?
>
> Does it work if you boot into the "UP" uniprocessor kernel?  What 
> brand and version of Linux?
>
> Warren
>


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Re: [luau] Dual Processors & Linux

[Warren Togami]

Rodney Kanno wrote:

No it's the same computer. For some reason, my BIOS is tempermental and
sometimes it detects only one of the two processors. But when it detects
only one, the watching video works fine. When my BIOS detects two
processors, watching video does not work anymore (using the same
programs). So both processors are still physically in the motherboard,
but the BIOS is only detecting one. I am running the latest NVIDIA
drivers, but I don't think the video card driver is the problem, becuase
when I switch to the generic driver (nv) I get the same thing.

I am running SUSE 9.0 (8.2 was the same), and I think SUSE installed
only the smp kernel?

Rodney



It sounds like you are having hardware issues in addition to your 
software problem.  Sorry I cannot suggest any thing more since I don't 
use SuSE or know much about its modern versions.


Warren

RE: [luau] Dual Processors & Linux

[Randall Oshita]

>>No it's the same computer. For some reason, my BIOS is tempermental
and 
>>sometimes it detects only one of the two processors. But when it
detects 
>>only one, the watching video works fine. When my BIOS detects two 
>>processors, watching video does not work anymore (using the same 
>>programs). So both processors are still physically in the motherboard,

>>but the BIOS is only detecting one. I am running the latest NVIDIA 
>>drivers, but I don't think the video card driver is the problem,
becuase 
>>when I switch to the generic driver (nv) I get the same thing.

Try using one cpu at a time(completely pull out the other cpu) and using
the same cpu on both sockets. Then test the other cpu. You want to
ensure that both your cpu and sockets are ok.
After try looking up at your mb manufacuteres website for bios updates,
bugs etcs.

Randall