Hi Mike, Unity works very poorly, it's unusable in my experience. If you remove compiz, Unity will cease to function. Instead, install a different window manager, such as gnome flashback. But, if you use gnome, make sure the backend is metacity, both are installed by default. Another option that we use here is MATE. It's a gnome lookalike, but with more features, such as window snapping similar to that in Unity.
I'd definitely say it was Unity, when I have used it with LTSP, the window has taken seconds to refresh, just when clicking on a menu item. This was solved when moving away from Compiz. I think that Compiz makes too many requests to the X terminal, causing huge slowdowns. The same is true for Google Chrome! Good luck Mike! Harry On 10/11/14 17:37, Mike Cammilleri wrote: > Hi Harry, > > I'm using Ubuntu 14.04 LTS out of the box, so I'm getting the Unity > desktop environment which I think uses compiz does it not? Perhaps I > should be trying other desktop environments such as Xfce and see if > there's better performance? I've never tried metacity or mate. > > Our users have been using the gnome environment forever so it will be > work to use a new environment that doesn't use similar names for apps > (like evince for example). Our current LTSP environment thats in > production actually runs gnome on Red Hat and we just use LTSP to book > the clients, but I'm now testing using a legit Ubuntu LTSP desktop > environment and running into these performance issues. > > Should I be concerned with video drivers that are on the LTSP server > itself? Not just the thinclient? > > Thanks, > mike > > > On 11/10/2014 02:49 AM, Harry Lavender wrote: >> Are you sure you're not using Compiz? >> >> Compiz is horrifically slow for us using LTSP, and isn't even slightly >> usable, so instead we use either metacity or MATE. >> >> Good luck! >> On 10/11/14 00:56, 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 -- Regards Harry Lavender Systems Administrator Severn Delta Limited DDI 01278 726278 Tel 01278 428200 Fax 01278 458766 Showground Road, Bridgwater, Somerset TA6 6AJ Company Number 4269451 VAT Registration GB793728185 ------------------------------------------------------------------------------ Comprehensive Server Monitoring with Site24x7. Monitor 10 servers for $9/Month. Get alerted through email, SMS, voice calls or mobile push notifications. Take corrective actions from your mobile device. http://pubads.g.doubleclick.net/gampad/clk?id=154624111&iu=/4140/ostg.clktrk _____________________________________________________________________ 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
