[K12OSN] More feedback on Fedora 10 + LTSP
dahopkins429 at gmail.com
Tue Apr 28 12:38:29 UTC 2009
>On Tue, Apr 28, 2009 at 1:22 AM, Warren Togami <wtogami at redhat.com> wrote:
> On 04/27/2009 09:23 PM, David Hopkins wrote:
>> Actually I can't make a claim either way since right now I'm confused
>> about just how much throughput I am getting without ltspbr0 even
>> present. I install iftop as well as ntop and have tried launching
>> tuxmath on several thin clients simultaneously.
> Where do you find tuxmath? It seems it isn't in Fedora 11 at least.
One location is here:
seems to be a newer version than what I am using
(tuxmath-1.5.4-1.src.rpm) so I'll try upgrading to the latest version.
It requires compilation but looks fairly straightforward. I'll try
>> For iftop: The first thin client used appr 38Mb/s just to bring up the
>> menu. When running, it was using appr 70Mb/s for the game. The second
>> client likewise used appr 38Mb/s for the menu. However, the moment I
>> selected an option from the menu, both instances dropped to around
>> 56Mb/s. When I added a third client, this dropped again, into the mid
>> 30Mb/s range. The total throughput stayed constant at around 110Mb/s.
>> However, even at 3 clients, the game was not playable (it was very
>> very slow). I continued adding clients and iftop continued to report
>> that the max stayed around 110Mb/s but the bandwidth for each client
>> dropped with each addition. At six clients, it was about 18Mb/s per
> Does tuxmath normally use that insane amount of bandwidth? 70Mb/sec is
> comparable to 320x240 30fps Youtube video. Absolutely nothing other than
> video in my experience using anything near that amount of bandwidth.
In my experience, it has always been a huge bandwidth hog.
>> However, the switch still showed that the link between it and the
>> server was 1000Mb/s. So .. why is only about 1/10 of the bandwidth
>> being used as far as iftop is concerned?
> I have never used iftop before this, so I don't know how good it is.
I have to admit that I like iftop for spot checking. Now, if I can
actually trust the numbers it would be excellent :)
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