Re: Running > 4GB of Memory
On Fri, 2005-10-21 at 08:22 -0400, Mark Hansen wrote:
> Thanks. Here are a couple follow-up question then.
>
> (1) If I start 2 separate VMWare processes, they should each be able to
> grab 3GB of memory (more or less) - is that right?
More or less. The 3GB per partition is divided into distinct 1GB
chunks. Google will explain in detail.
> (2) My Dell box has 2 Xeon processors and I'm running the SMP kernel.
> Even without CONFIG_HIGHMEM64G, should the 2 processor "split" access to
> the memory, so that I can run 2 processes - one on each processor - that
> have access to 3GB (more or less) each?
This isn't MacOS, where you specify how much RAM you want each
process to use. Also, I don't know if Linux allows you to pin
processes to CPUs.
Having said that, I don't know if VMware allows you limit the
amount of RAM it uses itself.
> -- Mark
>
> Aurelien Ricard wrote:
> > Ron Johnson wrote:
> >
> >> On Thu, 2005-10-20 at 22:46 -0400, Mark Hansen wrote:
> >>
> >>
> >>> I'm running debian on a dell poweredge 1750 and just intalled 6GB of
> >>> memory. Its a dual-processor machine and I use it with VMWare to run
> >>> multiple virtual machines.
> >>>
> >>> Problem - I can only "see" 4GB of memory. Here is the output from
> >>> "free -m":
> >>>
> >>> mhansen@debian01:~$ free -m
> >>> total used free shared buffers
> >>> cached
> >>> Mem: 3995 3908 86 0 145
> >>> 2668
> >>> -/+ buffers/cache: 1094 2901
> >>> Swap: 2047 0 2047
> >>>
> >>>
> >>> What do I need to do in order to make the other 2GB of memory available?
> >>>
> >>
> >>
> >> Build your own kernel, setting the appropriate HIGHMEM option.
> >>
> >> $ grep HIGHMEM /boot/config-2.6.12-1-386
> >> CONFIG_NOHIGHMEM=y
> >> # CONFIG_HIGHMEM4G is not set
> >> # CONFIG_HIGHMEM64G is not set
> >>
> >>
> >>
> > Ron's right, you need to rebuild your kernel with high memory support
> > enabled and everything gonna be OK with you 6GB
> >
>
>
--
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Ron Johnson, Jr.
Jefferson, LA USA
PGP Key ID 8834C06B I prefer encrypted mail.
"A hundred names on the ballot are better than one, because it
means that we are free."
FADILA SALEH, an Iraqi voter, 2005-01-30
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