[K12OSN] Some trouble with flash apps

[Grodeon, Steve R]

Our server is a brand new Pentium D dual core, it was around 20% on each cpu or so with 3 going.  It didn't occur to me until just now that I am running this over xen, could that have something to do with the problem? It's supposed to be extremely lightweight.

-Steve Grodeon-



-----Original Message-----
From: k12osn-bounces at redhat.com on behalf of David Trask
Sent: Fri 11/17/2006 10:33 PM
To: Support list for open source software in schools.
Subject: Re: [K12OSN] Some trouble with flash apps
 
That's weird....because typically with Flash it's your CPU that should be
high


"Support list for open source software in schools." <k12osn at redhat.com>
writes:
>I have tried many of your suggestions, and just to verify, my server is
>hooked into a gigabit port in our switch and I am 100% sure the server is
>running gigabit.  Dmesg | grep Mbps reported 1000 Mbps link.  When we
>play flash games on 2 or 3 computers while having a 4th run some network
>monitoring software, I can see the network utilization jump to the roof,
>while the cpu usage and RAM are fairly low.  We found that 3 playing at
>once was completely unusable for one person.  I haven't tried running
>them at lower resolutions as somebody had suggested, but i sure thought
>it could handle more than 2 thin clients.  We did try a pretty large
>variety of games and they all had similair problems.
>
>And I don't seem to have any trouble with anything other than flash
>games, I have tested many different apps that worked seemingly
>flawlessly, although none were real video intensive.  If it helps, I
>tried switching to IceWM instead of Gnome and it seemed to help a little
>bit, but not enough to make a real difference here.     
>
>-Steve Grodeon-
>
>
>
>-----Original Message-----
>From: k12osn-bounces at redhat.com on behalf of David Trask
>Sent: Fri 11/17/2006 9:54 AM
>To: Support list for open source software in schools.
>Subject: Re: [K12OSN] Some trouble with flash apps
> 
>"Support list for open source software in schools." <k12osn at redhat.com>
>writes:
>>That server is connecting to the switch at 10/100 speeds not 10/100/1000 
>>... so you are maxing out at 1 ;) 2 going full bore will slow 
>>considerably...as it is 140 which is a bit over the 100 ... sorry...need 
>>a Gig-E port on that switch... checkout the amer.com  SR24G2 I think I 
>>got the model right.
>>
>>--Huck
>
>
>Yes...the model is right  SR24G2....it is a 26 port switch....24 of them
>are 100baseT and 2 of them are gigabit...since it's integrated in the same
>switch....you come out of the server from the gigabit card to a gigabit
>port and then feed the 100baseT side.  I have several SR24G2's on my
>network and they work like a charm.  The price is VERY reasonable.  Flash
>will cause lots of issues with your CPU, but it shouldn't be as slow as
>you've described.  I'm able to have my entire lab on Flash web sites and
>it's acceptable.  You can do some experiments to see where the bottleneck
>is.  One idea is to hook your clients directly into the gigabit
>switch....make sure they negotiate down to 100 base T though...some
>switches won't do that.
>
>
>David N. Trask
>Technology Teacher/Director
>Vassalboro Community School
>dtrask at vcsvikings.org
>(207)923-3100
>
>
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>
>
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David N. Trask
Technology Teacher/Director
Vassalboro Community School
dtrask at vcsvikings.org
(207)923-3100


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