flash slow

[Joseph Hartman]

Thanks Robert, I'm going to bring my home pc in to work tomorrow and test it
out. It's C2D with 2gb RAM so we'll see if there's any improvement. I'll
also try enabling directx (I'm assuming I have to set LDM_DIRECTX = True in
/var/lib/tftpboot/ltsp/i386/lts.conf)? and installing gnash. I'm curious if
this is the only problem though, because Bill wrote this about 5 weeks back:

I setup at
home a small LTSP network with a few old Dells.  The server is a
3.2GB/1GB RAM machine and one client is similar and my son plays
Flash-based games on it all the time without any problem.

and Uwe is having similar issues and I doubt if he is as unfortunate in his
hardware selection as I am. Thanks very much for the prompt advice though,
I'll be sure to post results tomorrow. -joe
*
*On Thu, Mar 20, 2008 at 10:19 PM, Robert Arkiletian <robark at gmail.com>
wrote:

> On Thu, Mar 20, 2008 at 8:32 PM, Joseph Hartman <jlhartman at gmail.com>
> wrote:
> > I'm having the same problem as Uwe with flash being slow. In this flash
> game
> > (I use it to help my kinders practice using the mouse) I can literally
> see
> > the frames refreshing and it is utterly unusable. I got my gigabit
> uplink
> > switch today and connected it but there was no change from the old
> 10/100
> > switch I was using before. The new switch should just work out of the
> box
> > right? The LED indicates it has a gigabit connection. Since this made no
> > difference I also did a clean install of Hardy Beta hoping to see some
> > change. Alas.
> >
> > Here is a link to the system monitor display after I hooked up the
> switch
> > but before the Hardy install. I would say this image is typical of what
> I've
> > seen with 5 thin clients running the aforementioned flash game whether
> in
> > Gutsy or Hardy with Gigabit or not (although the RAM and CPU is running
> a
> > bit high since I had just opened firefox on a couple machines before I
> took
> > the screenshot).
> >
> > The server is a Dell GX270 P4 running at 3 GHz. It seems like the whole
> > server slows down when flash is playing, but I haven't confirmed this.
> With
>
> You have multiple reasons for the poor performance.
> 1) You have a weak server. It is not even dual cpu. Old netburst
> architecture.
> 2) You don't have much ram. 1GB is only enough for about 7 clients.
> 3) make sure you are running without ssh overhead for X. ( enable direct X
> )
> 4) even if you get a fast server and do all the tweaking I'm afraid
> that site is still going to be slow
>
> LTSP is not good at streaming video AND sound to thin clients. Network
> latency, remote X, high cpu usage for many clients just doesn't work
> well. It can get better than what you currently have but it will never
> be like running the browser locally (on the client). If you have
> powerful enough clients (min P3 800 + 256MB) check this out.
>
> https://help.ubuntu.com/community/UbuntuLTSP/LTSPFatClients
>
> > Hardy the game is even slow on the server, although this was not the
> case
> > with Gutsy (BTW Hardy seems realllllllly slow to log in on the server.
> Like
> > Gutsy on my laptop. Not good.) I've tried different thin clients with no
> > changes. I've also tried Cat 5 and 6 cables to the clients with no
> change. I
> > haven't tried Gnash in a while so I could give that a shot, but that
> still
> > doesn't solve the real problem.
>
> BTW Gnash just release 0.8.2.
>
> >
> > Is the network activity supposed to peak and valley like that? It does
> this
> > even if I'm doing something other than flash, like a google docs or
>
> All your X display traffic is flowing through your network.
>
>
> --
> Robert Arkiletian
> Eric Hamber Secondary, Vancouver, Canada
> Fl_TeacherTool http://www3.telus.net/public/robark/Fl_TeacherTool/
> C++ GUI tutorial http://www3.telus.net/public/robark/
>
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