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
>
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-- 
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


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