[sf-lug] GNU Denemo chokes a dual core 2 GB server at the school

Christian Einfeldt einfeldt at gmail.com
Tue Sep 25 13:41:12 PDT 2007


On 9/25/07, Kristian Erik Hermansen <kristian.hermansen at gmail.com> wrote:
> I implemented Edubuntu at my University on some older hardware.  I
> would say that I was satisfied with it up until about 10 clients.
> After that, you have to remember that all tasks are occurring on the
> central server, not on the end-points.  If you would like to utilize
> the hardware of the end-points, let me suggest using Diskless Remote
> Boot Linux (DRBL) or LTSP in fat-client mode.

I would like to find out more about how to implement this.  We still have a
few clients that are not suitable as fat-clients.  But we are hoping to
resolve that problem with a donation.

 This will allow you to
> offload the processing to the clients, and not the main server.

This sounds good.

> assume your are encountering a sharing problem with the sound device
> between all the computers.  Remember that standard LTSP (Edubuntu)
> only forwards the Xorg traffic to the clients via a secured
> connection, and that all operations are happening on the central
> server.


Thus, if one resource gets contention on the server, all
> client swill degrade as well...



I'll check this resource.  Thanks for the suggestion.

We have temporarily resolved the issue by having the kids initiate playback
sequentially, rather than simultaneously.  It's a workaround, not a
solution, but it helped us teach the class today in an orderly fashion.  So
thanks for the suggestion. I am REALLY interested in learning how to run as
fat clients as your suggested.
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