Re: Memory Concepts [+Newbie]

[Mark Brown <markb@marksmachinations.com>]

Hi Marcos,

A memory bank for RAM is just an individual addressable array on a  
memory board. The addressing of the bank is managed by the memory  
controller.

Regards,
-- Mark

On May 4, 2009, at 7:44 AM, Marcos Roriz wrote:

> I'm reading Mel Gorman Understating the Linux Virtual Memory Manager  
> and also TANENBAUM Modern Operating System I don't get some basic  
> concepts of the Memory Management in Linux Kernel.
>
> The first question is, what is a memory bank, It's not clear if its  
> a physical section of the memory of if its a chip (physical) itself.
>
> The ZONE_NORMAL zone refer only to kernel direct memory mapped, that  
> means only to kernel pages and kernel programs (such as daemons)?
>
> Why is the ZONE_NORMAL so large (896 MB)? How to deal with low  
> memory systems?
>
> The ZONE_HIGHMEM zone refer to kernel not mapped directly, so that  
> includes userspace programs right?
>
> I googled and searched for all those answers but couldn't find a  
> direct and consistent answer, thats why I'm asking for your guys help.
>
> Thanks very much for you time,
>
> Marcos Roriz
>
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