advice on partitioning

[AA]

Almost sounds like its not worth the trouble just for
another 128 mb....decisions decisions
Thanks
SMH

--- Vram <lamsokvr at xprt.net> wrote:

> On Wed, 2005-10-12 at 22:23 -0700, AA wrote:
> > Hello again, 
> >  
> > > This is a kernel thing...
> > > 
> > > You need to have high memory enabled..
> > > 
> > > 
> > > Can't remember the incantation.. Right now..
> > > 
> > > Vram
> > 
> > yes, this is what the warning that I saw told me. 
> I
> > will search for this online, but if you do happen
> to
> > remember how to do it please let me know.
> > Thanks in advance, 
> > SMH
> > 
> > 
> 
> 
> 
> Zones
> 
> In Linux, the memory available from all banks is
> classified into
> "nodes". These nodes indicate how much memory each
> bank has. This
> classification is mainly useful for NUMA
> architectures, but it's also
> used for UMA architectures, where the number of
> nodes is just 1.
> 
> Memory in each node is divided into "zones". The
> zones currently
> defined are ZONE_DMA, ZONE_NORMAL and ZONE_HIGHMEM.
> 
> ZONE_DMA is used by some devices for data transfer
> and is mapped in
> the lower physical memory range (up to 16 MB).
> 
> Memory in the ZONE_NORMAL region is mapped by the
> kernel in the
> upper region of the linear address space. Most
> operations can only
> take place in ZONE_NORMAL; so this is the most
> performance critical
> zone. ZONE_NORMAL goes from 16 MB to 896 MB.
> 
> To address memory from 1 GB onwards, the kernel has
> to map pages
> from high memory into ZONE_NORMAL.
> 
> Some area of memory is reserved for storing several
> kernel data
> structures that store information about the memory
> map and page
> tables. This on x86 is 128 MB. Hence, of the 1 GB
> physical memory the
> kernel can access, 128MB is reserved. This means
> that the kernel
> virtual address in this 128 MB is not mapped to
> physical memory. This
> leaves a maximum of 896 MB for ZONE_NORMAL. So, even
> if one has 1 GB
> of physical RAM, just 896 MB will be actually
> available.
> 
> Back to the solutions:
> 
> 
> Go here for the full article...
> 
> 
> http://kerneltrap.org/node/2450
> 
> 
> 
> 
> IF this isn't enough post again
> 
> 
> Vram
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> > 		
> > __________________________________ 
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> 
> 
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