Re: [[cobalt-developers] Maximum Ram on Raq 3i ?]

[david woods <d_woods@xxxxxxx>]

"Collin B. McClendon" <Collin@xxxxxxxxxxxx> wrote:
I have 512MB of ram in our raq 3i, does anyone know what chipset it uses? I
would like to put more RAM into it if at all possible. Also does anyone know
how many hits per month or page views the raq 3i could handle? (one site
static content)

512Mb is pretty large anyway, but considering Linux uses Virtual Memory, maybe
you won't get such a great speed increase by just plugging-in extra memory.
I've ported things to the Mac, which has awful memory-handling, and noticed a
few things about performance:

Using virtual memory really slows things down.
A disk cache really speeds things up.

Why not create a RAM disk and, where possible, set file cache options on the
programs you're using to point to this.
This will make oft-used files really zoom.

Some software may be using very inefficient code to read/write data (eg
reading/writing single bytes at a time), and here using a RAM disk will make
an incredible difference to the speed.

Hope this helps,

David Woods.
---------------------

A couple of questions I also have which might also be useful for you are:

Where can I get an external RAM disk for a RAQ (or just something that plugs
into an ethernet connection and looks like a normal hard drive)?

Is there some GUI utility to tell me in real-time how much RAM/Virtual Memory
each process on the RAQ is using?



PS on the subject of RAM disks, take a look at:
   http://www.macobserver.com/columns/iteen/2000/20000622.html
whilst this mentions the Mac most the the content is of general use.





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