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Hello

I'm not much of a kernel type, but I do have some formal background on OS
working and reading through the Linux-MM site brought back lots of stuff.

Anyway, I am working on a project where we have a large database split into
12 segments, and I want to put some of the indices in those segments into
memory.  The indices for all of the segments takes up about 4 GB.

The database server is a multi-threaded proprietary one that I ported over
to Linux - it already runs on MacOS (yes, true!), NT, Solaris, AIX.

I have a couple of questions (assume I am talking about the latest versions
of any component, like kernel or lilo or ramdisk):

1. If I purchase a Quad Xeon 550 with 4 GB of memory, will Linux work on it?
   (I saw the whole thing about tweaking kernel parameters to change from a 3:1
    split to a 2:2 split)
   Should I just buy 2GB - will I be able to use the extra 2GB?

2. Can I create a large (let's say 1GB) ramdisk or memory filesystem?

Obviously the more index I can fit into memory, the faster the result.

I'd really, really like to use Linux here.  It has proven itself as our
mail/DNS server and hasn't crashed once in over 2 years, where we reboot NT
servers weekly.

I am willing to do some kernel hacking and experimentation.  I have not
been able to find another resource related to large amounts of memory with
Linux.  Hopefully through my experiences I will be able to produce a Linux
VLM-HOWTO!

Thanks.

     _/   _/_/  _/_/_/ _/_/  _/_/         James E. King, III
    _/_/  _/ _/   _/   _/   _/            Aries Systems Corporation
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   _/  _/ _/ _/   _/   _/       _/        North Andover, MA.  01845
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  Enhancing the Power of Knowledge(r)     jking@ariessys.com
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