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
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