[K12OSN] OT: Testing FC10 results

Almquist Burke burke at thealmquists.net
Sat Apr 4 21:04:08 UTC 2009


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On Apr 3, 2009, at 8:59 AM, David Hopkins wrote:

> This is sort-of off-topic, but the server I have installed with FC10,
> LTSP5 continues to perform rather poorly with packages such as
> tuxpaint, gcompris and the like.


> So, could it be that the ltspbr0 bridge is a source of the issue?

I don't think that should impact performance much at all. IIRC the  
chroot memory footprint in K12Linux is still higher than K12LTSP.  
That might be part of it, if your clients have less that 128MB of  
memory.

> Or
> using nbdswap for the clients?
Actually, NBD swap is supposed to be faster than NFS swap, that's why  
the developers implemented it.

>
> Any ideas on how to tell?
>

I thought it might be the LDM_DIRECTX setting, but that is set to  
TRUE by default on Fedora, which means that X traffic isn't encrypted  
on K12LTSP by default. So it must be something else.  Higher network  
traffic for some reason, like increased screen resolution or color  
depth? You said the server has plenty of memory and CPU, and I don't  
think the disk IO should change that much.

> Sincerely,
> Dave Hopkins
>
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> K12OSN at redhat.com
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