Mailinglist Archive: opensuse-factory (549 mails)

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Re: Fwd: Re: [opensuse-factory] Kernel clarification
  • From: Basil Chupin <blchupin@xxxxxxxxxxxx>
  • Date: Tue, 10 Nov 2009 15:16:20 +1100
  • Message-id: <4AF8E914.3090103@xxxxxxxxxxxx>
On 09/11/09 20:51, Andreas Jaeger wrote:
On Sunday 08 November 2009 07:57:01 Basil Chupin wrote:

-------- Original Message --------
Subject: Re: [opensuse-factory] Kernel clarification
Date: Sun, 08 Nov 2009 17:37:08 +1100
From: Basil Chupin <blchupin@xxxxxxxxxxxx>
To: opensuse-factory@xxxxxxxxxxxx

On 08/11/09 06:54, Andreas Jaeger wrote:

On Saturday 07 November 2009 03:06:19 Basil Chupin wrote:

Forgot to mention: the CPU is AMD XP 3200+, 1.5GB RAM, 2x 500GB HDs,

The desktop kernel needs AFAIR PAE support, I'm not sure your CPU has it
- that might be the reason for the installation of the default one.

In general: kernel-desktop runs on "newer" hardware only, kernel-default
runs also on some older,

Andreas

Thanks for this Andreas, but then the puzzlement deepens because in 11.1
the pae kernel was installed on my computer. See the attached menu.lst.

I suggest to open a bugreport to get this resolved, I'm surprised as well but
don't know everything ;).


See my other response to you a short time ago (stating that my Athlon
DOES support pae).


Before submitting any bug reports I want to get some facts straight, and
what I suspect is occurring is that whoever put together the script for
the 11.2 installer is as confused about what kernel does what and which
features it's supposed to support. (Which is why someone, ?Carlos, asked
for a listing of what each type of kernel is supposed to do.)

For example, I just looked at menuconfig for the default kernel now
installed with 11.2 on my computer. The first thing I saw was that pae
*was* supported by the default kernel. (However, the kernel has the
Pentium Classic as the cpu when it was compiled.) Having a kernel-pae
then becomes a rather redundant kernel because kernel-default also
supports pae. Obviously there must be other differences - and this is
why a summary of what each kernel is supposed to do has to be provided.

One other thing I still want to check and that is does the default
kernel have the Time Frequency set to 1000Hz or is that really the
province of kernel-desktop?

I cannot check this because I forgot where this parameter is located,
and I cannot find the detailed instructions I printed out on how to
"fiddle" with the kernel to give it a bit of "oomph". The instructions
were posted by someone in opensuse-help (I think) some months ago in the
form of an URL where the details were to be found. If anyone remembers
this URL could you please let me know? (BTW, it was using these
instructions when I mentioned, in an earlier message [and see below],
that I fiddled with the kernel some months ago.)

So, I think that at this point what is required is a summary of what
each kernel does/doesn't do. This is the starting point. Not having such
a list I feel will continue to lead to misunderstandings and unnecessary
debate.


I don't have earlier versions of oS installed on HDs so cannot check but
I seem to recall the the pae kernel was also installed by at least one
other earlier version of oS.

I also remember "fiddling" with a copy of the kernel in 11.1 to compile
my own which had the (?some of the) qualities now in the desktop kernel
eg,the Timer Frequency set to 1000Hz.

Am I wrong or isn't it the situation that if the kernel is compiled with
parameters selected but which, in fact, are not available in the CPU
then the kernel still does its job and uses those which ARE available?
That is, it doesn't have a hernia, throw up its hands and runs off
screaming into the distance :-) .

This works in some cases but not everywhere AFAIK,

Andreas


BC

--

I work to live not live to work.


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