[K12OSN] tuxtype superslow on 12 gig ram server -K12LTSP

[William Fragakis]

You are running gigabit ethernet out of the server aren't you? The
clients need only 10/100 but it has to be gigabit from the server to the
switch beyond 5-6 clients in our experience. Full screen games easily
grab 10-15 mb/sec (did I get my units right?) of bandwidth which times 6
gets you to the point where 10/100 begins to saturate. We've seen peaks
close to 30, iirc.

If you are, then Jim's explanation supersedes. If not, it will help but
you will eventually run into the issue Jim mentions. 

run top in the terminal and if you seem to have plenty of cpu headroom,
work on the network. if you are maxing out your cpus, again, refer to
Jim's post. 

Don't feel too bad. You ought to see what some Flash web sites will do
to a CPU. (http://www.cheetos.com)

regards,
William
On Wed, 2006-09-27 at 08:06 -0400, k12osn-request at redhat.com wrote:
> Message: 18
> Date: Tue, 26 Sep 2006 23:47:42 -0700
> From: "Jim Kathan" <tkathan at charter.net>
> Subject: [K12OSN] tuxtype superslow on 12 gig ram server -K12LTSP
> To: <k12osn at redhat.com>
> Message-ID: <000001c6e200$d52bc250$4000a8c0 at themm>
> Content-Type: text/plain; charset="us-ascii"
> 
> I have a dual core Pentium 3, 12 gigs of ram, super fast HDD with tons
> of
> space, and when 20 thin clients with 128 mb of onboard ram are all
> running
> things like tuxtype, khangman, etc. they run unbearably slow, to the
> point
> that the screen takes literally 5 to 6 seconds to refresh. Its like
> the game
> is on pause every other second. Does this sound right?
> 
> In my lts.conf, I have "enable_nbd_swap = Y", xramperc = 90 (I also
> put it
> to 95, no difference), and tried it with both "Local APPS = Y" and
> "N".
>