[GTALUG] teksavvy dsl 2 modem that runs OpenWRT

[Lennart Sorensen]

On Sat, Nov 22, 2014 at 08:54:23PM -0500, D. Hugh Redelmeier wrote:
> In theory, one reason that the RP is slow because so much goes through
> a single USB interface: all networking as well as all USB.
> 
> Generally under Linux a CPU does not get blocked due to I/O waiting.
> All processes might get blocked due to I/O waits, at which point the
> CPU cannot make progress because there is no work to do.  But that's
> a slow I/O problem, not a slow processor problem.
> 
> The RP does have a slow processor.  I would guess that it would be
> somewhere in the middle of the pack compared with wireless routers'
> processors.  But they have specialized hardware for networking (like a
> pair of ethernet ports and an ethernet switch).

Actually surprisingly many have only one port and use vlans on the switch
to create the WAN versus LAN ports.  Some even attach the wifi to
the switch.

> As always, performance guesses are unreliable (even mine!).
> Measurement is called for if it matters.

-- 
Len Sorensen