Re: memory and Debian

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Author: Michael Havens
Date:  
To: plug-discuss
Subject: Re: memory and Debian

I don't get it. Which calculations? Ohhhh. Do you mean 393,216K really is
equal to 412,876,800?

On Thursday 03 June 2004 20:37, Kevin Brown wrote:
> Linux uses the proper:
> 1024KB = 1MB
> 1024MB = 1GB
> 1024GB = 1TB
>
> so your calculations would be off by 2.5% per conversion (e.g. 5% off for
> GigaByte to KiloByte) if you use the 1:1000 ratio.
>
> > This brings something to mind:
> > Durring bootup 393216K of ram is detected; but free says:
> >
> > bmike1@1[bmike1]$ free
> >              total       used       free     shared    buffers     cached
> > Mem:          386396   224988     161408          0       9968     116824
> > -/+ buffers/cache:      98196     288200
> > Swap:      1025000               0   1025000
> > bmike1@1[bmike1]$

> >
> > Please confirm that this has something to do with HIGHMEM or else that
> > HIGHMEM is already configured into this kernel and that in the computer
> > world 386396 is close enough for court to 393216K. Or perhaps I don't
> > even approach the one Gbyte of which you talk. Bout doesn't 393216K =
> > 393,216,000 and isn't a million= to a gig or am I just screwy?
> >
> > On Thursday 03 June 2004 18:51, Jay Jacobson wrote:
> >>Bryce is right on. The HIGHMEM option is not in the kernel, thus it will
> >>only see 896MB of physical RAM. You will need to recompile the kernel
> >> with this enabled. From 'make menuconfig', see the "Processor type and
> >> features -> HIGHMEM I/O support" stuff.
> >>
> >>~Jay
> >>
> >>..
> >>.. Jay Jacobson
> >>.. Edgeos, Inc. - 480.961.5996 - http://www.edgeos.com
> >>..
> >>.. Network Security Auditing and
> >>.. Vulnerability Assessment Managed Services
> >>..
> >>
> >>On Thu, 3 Jun 2004, Bryce C wrote:
> >>>More than likely, I think the kernel doesn't support 1Gb+ of memory.
> >>>Don't know about debian specifically, but distros like mandrake package
> >>>separate kernels for higher limits, or you can compile your own kernel
> >>>(not for novices).
> >>>
> >>>On Thu, 2004-06-03 at 16:28, wrote:
> >>>>So the system does not just detect the new amount of memory?
> >>>>
> >>>>I use grub, but I will look for an option like that.
> >>>>
> >>>>
> >>>>
> >>>>jim
> >>>>
> >>>>>There is an option that needs to be fed to Lilo that shows the amount
> >>>>>of RAM
> >>>>>that a system has
> >>>>>
> >>>>>something like
> >>>>>append=Mem=1536M
> >>>>>
> >>>>>>I added some memory to a Dell server running debian and the bios
> >>>>>>reported
> >>>>>>that it detected more memory during the next bootup but when I did a
> >>>>>>free
> >>>>>>It does not seem to report more memory, there is a more that normal
> >>>>>>that is free but not 512 mb free.
> >>>>>>
> >>>>>>I went from 1 gig to 1.5 gigs of memory, not sure if Debian sees it
> >>>>>>this way.
> >>>>>>
> >>>>>>
> >>>>>>             total       used       free     shared    buffers
> >>>>>>cached
> >>>>>>Mem:        903688     817132      86556          0     134824
> >>>>>>322400
> >>>>>>-/+ buffers/cache:     359908     543780
> >>>>>>Swap:      2032212          0    2032212

> >>>>>
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--
<:-)Mike(-:>






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