[K12OSN] Slow terminals

Nils Breunese nils at breun.nl
Mon Aug 6 17:59:05 UTC 2007

James P. Kinney III wrote:

> On Mon, 2007-08-06 at 13:38 -0400, "Terrell Prudé Jr." wrote:
>> James P. Kinney III wrote:
>>> Theoretically, a 1Gbit Nic _should_ handle about 700Mb/s using  
>>> standard
>>> ethernet (can't do jumbo frames in 100Mb). You are at the upper  
>>> edge of
>>> that limit with 54 clients running. Figure in at least 7Mb/s per  
>>> client
>>> just for resting state screen draws. If there is activity (all of  
>>> the
>>> games - childsplay, gcompris, tuxmath, tuxtype - are real  
>>> bandwidth hogs
>>> and can eat 20Mb/s for each instance).
>> In support of James's point here, TuxType will actually eat even
>> more--as high as 73Mb/sec per instance.
> OUCH!! I have only clocked an aggregate and average. Since tuxtype and
> tuxmath use the same engine I suspect they will be equivalent  
> bandwidth
> hogs.

The bandwidth needed doesn't really depend on the things like  
processing power and calculations. It's just the amount of on-screen  
activity. Video and fast graphics take up a lot of bandwidth.

Nils Breunese.
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