on Thu, Jun 09, 2005 at 11:19:32PM +0200, Damiano Verzulli (damiano@xxxxxxxxxxx) wrote: > Daniel Howard wrote: > >[...] convert our elementary school's network to support > >LTSP/thin clients, one of the challenges we have is that due to > >construction > >[....] > > Please note that, while driving along the way of the LTSP/thin_client > adoption, another challenge you might face with, expecially employing > wireless-lans, it's the bandwidth! > > As the standard LTSP rely on the X protocol and the X protocol consumes > lot of bandwidth, I think that with a 11Mbps links you could experience > some problems! My experience with ~9 clients on a 802.11b WiFi net, I found performance for X was tolerable for basic work, though noticably laggy for graphics (e.g.: GIMP). This with contention from web and file/print access over the same segment. For those comparing wired 10MB/s links, remember that WiFi is the equivalent of hubbed, not switched, networks. And that there's the security concern of a sniffable link. > In order to avoid such problems and, also, in order to "improve" (a bit) > the overall quality of the whole architecture, you should take a look at > NX technologies (www.nomachine.com). It should be added to LTSP quite > easily. Please note that the "core" of the NX architecture is > _open_source_ and, as such, can be used freely. There're also a FreeNX > project, somewhere on the web, that should embed all (and only) the > open-source components of NX (but I can be wrong. Please check!). > > Please note that NX let user to access a central server via a graphical > interface also with a standard 28.8 kbps modem. Something simply > impossibile with standard X protocols. Actually, not entirely, though it's pretty darned slow. Using lbxproxy helps, as well as a very low overhead windowmanager, minimual updating of screen (that means, e.g.: few performance meters -- most of the WindowMaker dock apps update ~10x/s), and simple graphics (solid backgrounds, non-gradient titlebars). Peace. -- Karsten M. Self <kmself@xxxxxxxxxxxxx> http://kmself.home.netcom.com/ What Part of "Gestalt" don't you understand? One should remember that the Universe is large enough that unlikely things happen really quite often.
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