Thanks Michael, I have tried setting up an LTSP server as a VM and I have the same problems. So perhaps it is my thin-client.
A couple things regarding Harry's suggestions as well.... How does one get rid of compiz or disable it? If I apt-get remove compiz it will also remove ubuntu-desktop. I think I need ubuntu-desktop, so not sure how to get rid of compiz. I did have to install gconf-editor and disable apps->metacity->general compositing_manager and compositor_effects so that the gnome terminal wouldn't always be on top. Are there other post-installation steps that should be done after setting up an out-of-the-box LTSP server that is not really documented? I'm using Intel GMA 3150 onboard intel graphics -- doesn't Ubuntu already contain all Intel drivers? According to their site: "Most versions of the Linux* operating system include Intel® graphics drivers. Intel recommends checking with your Linux distribution vendor or computer manufacturer for precompiled driver packages." Thanks for these leads guys. --mike On 11/09/2014 06:56 PM, Michael Pope wrote: > Mike, > > On 08/11/14 07:23, Mike Cammilleri wrote: >> So I've been experimenting with various hardware for our LTSP servers. >> Everything from VM's to this current Intel(R) Xeon(R) CPU E5-2630 0 @ >> 2.30GHz (12 core) with ~48GB of RAM. (Dell Poweredge). >> >> Thin client is a Zotac ZboxSD13-ID13 with 4GB of RAM and an Intel Atom >> D525 (1.8 GHz, dual-core). >> >> I have a 1gigabit connection all the way from the thin client to the >> LTSP server. >> >> Why are things always laggy? Multiple tabs in Firefox - will take 5 >> seconds after each click for anything to happen. Clicking between >> windows has same almost 5 second lag or more. Of course watching a >> Youtube video slows everything down. >> >> I installed xosview to monitor the server and I do notice the network >> graph pegging at the top of the chart, but the actually numbers are just >> fluctuating from 6K to 5Mbit so I'm not sure network is the problem. But >> there is no way that this LTSP server shouldn't be able to handle a >> single thin-client efficiently. However I've seen this behavior on our >> other LTSP server configurations as well. I can't seem to track down the >> slowness - RAM looks good and CPU time is very low. >> >> Could it be a lag in the actual transmission of X (video) to my monitor? >> When I type this email the cursor is moving fine. If I type in Firefox >> its laggy again. I'm stumped. >> >> What should one look for when optimizing LTSP for performance? >> Everything I read says I'm doing it fine as far as meeting the LTSP >> server system requirements but I can't have users using such a lagging >> interface. >> >> Thanks for any advice! >> mike > If you install virtualbox and create a PXE boot VM you could do a test > like this and it would prove that it's your thin client hardware or not. > > Another trick I do is use my notebook to test as it has a better > graphics card than some of these thin clients and see if it has the same > problem when I use it to PXE boot from the LTSP machine. > > from > Michael > > ------------------------------------------------------------------------------ > _____________________________________________________________________ > Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: > https://lists.sourceforge.net/lists/listinfo/ltsp-discuss > For additional LTSP help, try #ltsp channel on irc.freenode.net ------------------------------------------------------------------------------ _____________________________________________________________________ Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: https://lists.sourceforge.net/lists/listinfo/ltsp-discuss For additional LTSP help, try #ltsp channel on irc.freenode.net
