[plug] LTSP server load

[Bernd Felsche]

On Thu, Jul 31, 2003 at 11:48:11AM +0800, Craig Ringer wrote:

> Results might be different, however, when users are regularly using 
> OpenOffice and all users leave their mail open. Probably not much 
> different, though. While top shows a memory footprint of ~43mb for the 
> first OpenOffice instance, the real memory impact as measured by change 
> in the output of 'free -m' appears to be about 9mb. Anybody who has 
> ideas as to why has my ear.

> 23217 craig     15   0 44732  43M 35528 S     0.0  2.1   0:02 soffice.bin
> 23453 guest     15   0 44480  43M 35352 S     0.0  2.1   0:02 soffice.bin
> 
> but 'free -m' only shows a 9mb increase at each new instance.

Shared memory - much of it libraries.

> Real world effect: adding a client may as well not have happened for all 
> the difference it makes to the server. I wouldn't be surprised to be 
> able to support 50 - 100 clients on this machine, though memory might 
> become an issue then (depending on what the "real" memory use of our 
> environment is).

I think your single network connection will saturate; unless you've
got a gigabit (server has a gigabit interface if it's a recent x235)
switch on the back of it.

> The server is a dual Xeon 2.4GHz with 2 gigs of RAM and a SATA
> RAID array.

> Login environment is XFCE4, apps include OpenOffice, Mozilla, and

xfce makes a big difference in memory footprint.

> (the main one) a remote xterm from our SCO OpenSewer box for our
> accounts & bookings system. XFCE was chosen because it's
> lightweight, easy to configure centrally, easy for users to modify
> but hard for them to ACCIDENTALLY change, and easy to fix if
> something goes wrong.

[snip]

> Oh... did I mention? The vast majority of that load average score is 
> user screensavers ;-)

Goes to show how little work people actually do with computers. :-)

-- 
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