FC4 - Installation memory test ?

[richard mullens]

I just built a new machine and booted up with FC3 and SuSE Professional 
9.1 installation DVDs.

I tried the memory test that is available on the SuSE installation and 
pretty quickly it found a bit that read back as zero when 1 was written.
As I had two DIMMs installed, I swapped them around and the bad bit 
moved to the other address bank - as expected.

I think that such a test function would be useful in FC4 - unless (and 
here I'm showing my ignorance) the boot sequence tests memory and marks 
bad memory as unavailable.
Can one can tell the system about bad memory ?

[Phil Schaffner]

On Mon, 2004-12-20 at 03:05 +0000, richard mullens wrote:
>  I just built a new machine and booted up with FC3 and SuSE
> Professional 
>  9.1 installation DVDs.
>  
>  I tried the memory test that is available on the SuSE installation and 
>  pretty quickly it found a bit that read back as zero when 1 was written.
>  As I had two DIMMs installed, I swapped them around and the bad bit 
>  moved to the other address bank - as expected.
>  
>  I think that such a test function would be useful in FC4 - unless (and 
>  here I'm showing my ignorance) the boot sequence tests memory and marks 
>  bad memory as unavailable. 
I'm not familiar with the SuSE memory test, but there is
isolinux/memtest on CD #1.

>  Can one can tell the system about bad memory ? 
Don't think so.

Phil

[Alan Cox]

On Sun, Dec 19, 2004 at 10:12:38PM -0500, Phil Schaffner wrote:
>  > Can one can tell the system about bad memory ?
>  
>  Don't think so. 
It depends how desperate you are. See the Documentation/boot.txt and you can
reserve that bit of memory if it is one area not many. Usually people return
faulty RAM but if its too late then providing you don't mind fiddling the
reserve approach works. I don't think it needs a patch these days although
it used to

[richard mullens]

Alan Cox wrote:

> On Sun, Dec 19, 2004 at 10:12:38PM -0500, Phil Schaffner wrote:
>   
>
> >>Can one can tell the system about bad memory ?
> >>      
> >>
> >Don't think so.
> >    
> >
>
> It depends how desperate you are. See the Documentation/boot.txt and you can
> reserve that bit of memory if it is one area not many. Usually people return
> faulty RAM but if its too late then providing you don't mind fiddling the
> reserve approach works. I don't think it needs a patch these days although
> it used to
>
>   
>  
Thank you both.  I obtain my hardware from a Computer Fair - but it is 
closed until
the new year

[Russell Coker]

On Monday 20 December 2004 14:05, richard mullens <mullens(a)ntlworld.com&gt; 
wrote:
>  I think that such a test function would be useful in FC4 - unless
> (and 
What do you require that typing "memtest" at the FC3 CD1 install prompt does 
not provide?

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=143653

One thing I've noticed that memtest86+ doesn't do is install a GRUB menu entry 
when you install the package.  I've filed a bugzilla, see the above URL.

>  here I'm showing my ignorance) the boot sequence tests memory and
> marks
>  bad memory as unavailable. 
It could be handy for a very small number of people to be able to run a memory 
test at boot time and lock out bad blocks.  But for most people I think it's 
best to have a smaller kernel.  If either the BIOS or memtest86+ finds a 
memory error then you have a hardware problem that you have to fix before you 
should expect ANY operating system to work well.

You state that you have found a single bit that's broken in your memory, what 
makes you think that the memory module only has one error?  Maybe after it 
warms up it will have more errors.

-- 
http://www.coker.com.au/selinux/   My NSA Security Enhanced Linux packages
http://www.coker.com.au/bonnie++/  Bonnie++ hard drive benchmark
http://www.coker.com.au/postal/    Postal SMTP/POP benchmark
http://www.coker.com.au/~russell/  My home page

[Chris Adams]

Once upon a time, Russell Coker <russell(a)coker.com.au&gt; said:
>  https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=143653
>  
>  One thing I've noticed that memtest86+ doesn't do is install a GRUB menu entry 
>  when you install the package.  I've filed a bugzilla, see the above URL. 
Try "memtest-setup" if you have the memtest86+ package installed.
-- 
Chris Adams <cmadams(a)hiwaay.net&gt;
Systems and Network Administrator - HiWAAY Internet Services
I don't speak for anybody but myself - that's enough trouble.

[Russell Coker]

On Friday 24 December 2004 00:40, Chris Adams <cmadams(a)hiwaay.net&gt; wrote:
>  Once upon a time, Russell Coker <russell(a)coker.com.au&gt; said:
>  > https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=143653
>  >
>  > One thing I've noticed that memtest86+ doesn't do is install a GRUB menu
>  > entry when you install the package.  I've filed a bugzilla, see the above
>  > URL.
>
>  Try "memtest-setup" if you have the memtest86+ package installed. 
# memtest-setup
grubby fatal error: unable to find a suitable template
Setup complete.
#

-- 
http://www.coker.com.au/selinux/   My NSA Security Enhanced Linux packages
http://www.coker.com.au/bonnie++/  Bonnie++ hard drive benchmark
http://www.coker.com.au/postal/    Postal SMTP/POP benchmark
http://www.coker.com.au/~russell/  My home page

custom modules size

[marek cervenka]

hi,

i have problem with recompiled custom kernel
modules are very large

[root@lts-cna modules]# du -s 2.6.9-1.681_FC3/kernel/
37420   2.6.9-1.681_FC3/kernel/

[root@lts-cna modules]# du -s 2.6.9-prep/kernel/
242624  2.6.9-prep/kernel/

any help? google doesnt help me

thanks

---------------------------------------
Marek Cervenka
Centrum Vypocetni Techniky
CVT 		- http://cvt.fpf.slu.cz
FPF SLU OPAVA 	- http://www.fpf.slu.cz
LCNA 		- http://lcna.slu.cz
=======================================

custom modules size

[Alexander Dalloz]

Am Di, den 28.12.2004 schrieb marek cervenka um 0:48:

>  i have problem with recompiled custom kernel
>  modules are very large 
They contain debug informations and are not stripped.

>  Marek Cervenka 
Alexander

P.S. Please don't hijack foreign threads!


-- 
Alexander Dalloz | Enger, Germany | new address - new key: 0xB366A773
legal statement: http://www.uni-x.org/legal.html
Fedora GNU/Linux Core 2 (Tettnang) on Athlon kernel 2.6.9-1.6_FC2smp 
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