[plug] PPPoE tuning

[Bernd Felsche]

Tomasz Grzegurzko <tomasz_g at arach.net.au> writes:
>Quoting Bernd Felsche <bernie at innovative.iinet.net.au>:

>> I've recently connected to ADSL2+. My newer firewall is a Pentium
>> MMX @ 200MHz with "minimal" SuSE 10.0 and shiny new kernel installed.

>> The firewall is running rp-pppoe and it's maxed out on CPU at about
>> 14,000 kbps.  Most of the CPU usage is in kernel mode so it's
>> obviously doing important stuff in the ppp module.

>> Is there any obvious tuning that I could be doing?

>Are you sure its actually running in kernel mode and not user mode?

The SuSE doc says that the pppoe uses kernel mode. Under load, only
about 20% is in user space and 80% in kernel.

>rp-pppoe takes a bit of work to get running in kernel mode; I didn't see any
>difference once I got it going in kernel space (but I'm on 256/64).

I read that there are some tuning options in the documentation but
don't yet understand which ones will have the best effect.
-- 
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