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Re: [K12OSN] TC wifi initializtion - concept



Anything that uses the SDL toolkit for graphics is barely usable at 100Mbps and less than 1GHz on the client cpu. Tuxmath is barely usable with a 1Gbps network and a 1.5GHz client cpu.


On Tue, Apr 8, 2014 at 10:43 AM, Jeff Siddall <news siddall name> wrote:
On 04/07/2014 10:54 PM, Terrell Prude' Jr. wrote:
No way in heck I would want TC's on wireless.  It's a hub.  X11 screen
updates can suck up to 73 Mbit/sec when playing TuxType (I did this
measurement about 10 years ago and re-confirmed it about 5 years ago).
As much as the wireless hype may be going on now, there's just no way an
LTSP architecture can be successful on a hub, be that hub wireless or
wired.  Well, not if you intend to use the full complement of
educational apps, that is.  And don't even *think* about anything that
uses Flash, for the same reason.

LibreOffice'll work OK.  So will Gedit or even Firefox, provided there
aren't a lot of screen updates.  But relatively static (as far as screen
updates go) apps like that are about it.  Putting LTSP on wireless is a
recipe for failure, given current wireless technology.

I agree.

Wireless is just not cut out for _general_ LTSP use.  You might find some limited success for things like kiosks running everything as a localapp but the use cases are relatively niche.

I have moved most of my clients to switched wired 1000 Mbps connections because even dedicated 100 M connections were too slow for some things.  Also keep in mind that the apps that use a ton of bandwidth might not be obvious.  LibreOffice Impress was one of the applications that was frequently unusable at 100 Mbps.

Jeff


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