could QT be the problem? We experienced some serieus slowdowns with the new QT rendering, see https://en.opensuse.org/SDB:KIWI-LTSP_troubleshooting at the bottom of the file.
jef Op 11/10/2014 09:49 AM, Harry Lavender schreef: > 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
