Is it just me, or is LTSP a mess?

Richard Doyle rdoyle at
Tue Sep 9 19:35:51 BST 2008

On Tue, 2008-09-09 at 20:10 +0200, kjetil knudsen wrote:
> On Tue, Sep 9, 2008 at 6:26 PM, Asmo Koskinen
> <asmo.koskinen at> wrote:
>         kjetil knudsen kirjoitti:
>         > We have also the exact same experience. We are a big school
>         with over
>         > 400 clients and 9 servers that run Ubuntu Hardy. [>8] I
>         really like
>         > Ubuntu, but we have to have a system that really works and
>         that you can
>         > trust beeing used by hundreds of pupils. K12LTSP did
>         this....
>         This proves anything... We used to have Ubuntu 6.06+LTSP4.2,
>         now we have
>         Ubuntu 8.04.1+LTSP5.
>         2 servers, both have 2 x Dual Core Xeon and 6G memory. LAN is
>         fast. We
>         have 113 thin clients, HP t5125/5135.
>         Here is video about one classroom (12 thin clients) on the
>         other day.
>         First some 2D games, then Gimp and then Flash games on the
>         Internet.
> I am very pleased that you are satisfied because Ubuntu Hardy seems
> like at very god distro with all its eye-candy etc. I see that you are
> using true thin clients that works well. We have a lot of
> compaq-desktops that we use as thin-clients. They all have 128-512 MB
> ram. As i mentioned earlier it seems that there is a problem when the
> clients are "talking" to the fileserver when the pupils logs on that
> are generating a huge amount of stress on the fileserver that makes
> everybody and everything stall. 5-15 pupils are in a way  acceptable.
> But when 20-30 pupils logs on, the fileserver is paralysed. (And
> again. Our fileserver is overkill). To me it seems like perhaps it is
> the clients that make some kind of wild NFS traffic towards the
> fileserver when they log on. And when none of these problems occured
> with K12LTSP with the same clients and servers I naturally believe
> that there is something strange in Hardy and LTSP5
> Kjetil Knudsen
> Grødem skole, Norway

Are you using LDM_DIRECTX=yes ?

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