kupa kupa kupa
2014-11-11 9:56 GMT+01:00 Harry Lavender <harry.laven...@severndelta.co.uk>:
> 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
>
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>
>
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>
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