1GB ramdisk

1GB ramdisk

[James E. King, III]

Thanks for all the help.  I don't really need the 4GB memory for
application space...  What I want to do is take the index files of the
database and put them into a ramdisk.  It appears that this is possible,
albeit with some patches.  I think this will substantially increate the
performance of my database system.

Someone suggested using alpha which would solve all of my problems.  True,
but where can I find a quad processor 500MHz alpha box for around $25,000?
Let me know.  Last time I checked, the list price on an AlphaServer 4100
configured this way was over $100,000.

It would be really, really helpful if someone created a ramdisk-HOWTO with
information on how one can create a ramdisk of 1GB or 2GB size. :>


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  Enhancing the Power of Knowledge(r)     jking@ariessys.com
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Re: 1GB ramdisk

[Benjamin C.R. LaHaise]

On Thu, 29 Apr 1999, James E. King, III wrote:

> Someone suggested using alpha which would solve all of my problems.  True,
> but where can I find a quad processor 500MHz alpha box for around $25,000?
> Let me know.  Last time I checked, the list price on an AlphaServer 4100
> configured this way was over $100,000.

I'm going to play a skeptic here as I think Xeons aren't the best use of
people's money, but that's just my opinion.  What are the actual
bottlenecks in your system -- remember that filesystem access and vm
operations are still serialized in 2.2, so going from 2 to 4 cpus may not 
get you the performance improvement you deserved.  A dual processor 21264
box with 512M of RAM goes for ~$15000 (see http://www.dcginc.com/), which 
is worth considering.

		-ben


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