Re: Additional RAM brings Lenny to a slow-down

[andy <geek_show@dsl.pipex.com>]

Andrei Popescu wrote:
> On Fri, Feb 29, 2008 at 07:18:41AM +0000, andy wrote:
>
> [...]
>
>   
> > with a fix from the manufacturers. The other alternative seems to be 
> > the mem=xxx option passed to the kernel. If I use the latter approach, 
> > is this something that I can develop a script to do automatically at 
> > boot (for example, to run it as part of the GRUB parameters), or is it 
> > something that I would have to do manually?
> >     
>
> $ grep kopt /boot/grub/menu.lst
> ## If you want special options for specific kernels use kopt_x_y_z
> ## e.g. kopt=root=/dev/hda1 ro
> ##      kopt_2_6_8=root=/dev/hdc1 ro
> ##      kopt_2_6_8_2_686=root=/dev/hdc2 ro
> # kopt=root=/dev/hda2 ro vga=791
> # xenkopt=console=tty0
>
> Regards,
> Andrei
>   
Thanks for this Andrei. How would I tweak this to enable my kernel to 
recognise and utilise the additional RAM? Looking through the file, the 
relevant section appears to be this commented part:

   ## should update-grub create memtest86 boot option
   ## e.g. memtest86=true
   ##      memtest86=false
   # memtest86=true

The instructions are to not uncomment the section, but just to edit. So 
would my edit be to add
   memtest86=true or memtest=false

or would I simply add the line to menu.lst between the two markers that 
reads:
   mem=2097152M     #2GB RAM

The latter is what I understand from bootparam(7), but I'd like to 
confirm before I commit.

Thanks

A




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