[K12OSN] performance issues

William Fragakis william at fragakis.com
Thu May 4 04:27:31 UTC 2006

my $.02

more ram and make sure you have gig ethernet going to the clients. The
clients can be on 10/100 but the connection between the server and
switch should be gig.

Oddly enough, you may find performance improves with RAID 1. RAID 1 is
slower for writes (since you do that twice) but reads are easier such as
loading a program since you can read the same info in two locations. We
run a 10k SATA software RAID on a server with about 30 clients with no
problem. Never tried to open 30 copies of OO at once though. 

We also started using AbiWord for word-processing (we do K-5) since it
does just fine for their needs and loads much faster. Kids love the
instant gratification

RAM will allow you to make sure you don't swap when loading multiple
instances of StarOffice. You might take a look at your resources (ie
RAM, network, processor) when loading and see where the bottle neck is.

On Wed, 2006-05-03 at 10:51 -0400, k12osn-request at redhat.com wrote:
> Message: 10
> Date: Wed, 03 May 2006 03:03:19 -0500
> From: Liam Marshall <k12ltsplover at stmaurice.mb.ca>
> Subject: [K12OSN] performance issues
> To: "Support Schools." <k12osn at redhat.com>
> Message-ID: <445863C7.6070204 at stmaurice.mb.ca>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> I have a dual zeon 3.06 GHz server, currently with 4 80 Gb SATA
> drives 
> connected to a MegaRaid 4 port raid controller set for raid 0.  I
> have 
> currently 2 Gb of RAM.
> Workstations are almost exclusively IBM 300PLs which are thin
> clients, 
> onboard video, sound, nic, etc
> They are a little slow when 30+ workstations all load StarOffice 7 at 
> the same time, or when they log out.
> I am planning on upgrading memory from 2 to 4 Gb, and increase the 
> backbone to Gb, but this upgrade will most likely not happen till 
> summer.  In the mean time, is there anything I can do to increase 
> performance?  Non of the workstations have hard drives, and their
> memory 
> is 96 Mb each.  I have tried enabling swapfiles with not much 
> perceivable difference.  What is the deal with running apps locally?  
> And how do I/Can I do it?
> Enquiring minds want to know.
> Thanks

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