Re: [Cerowrt-devel] odroid C1+ status

[David Lang <david@lang.hm>]

A blog format for hardware testing would be a good idea.

David Lang

On Sat, 5 Mar 2016, Dave Taht wrote:

> Date: Sat, 5 Mar 2016 12:23:36 -0800
> From: Dave Taht <dave.taht@gmail.com>
> To: moeller0 <moeller0@gmx.de>
> Cc: "cerowrt-devel@lists.bufferbloat.net"
>     <cerowrt-devel@lists.bufferbloat.net>
> Subject: [Cerowrt-devel] odroid C1+ status
> 
> wow, thx for all the suggestions on alternate x86 router hardware... I
> will read more later.
>
> Would using a blog format for things like the following work better
> for people? I could more easily revise, including graphics, etc,
> etc... could try to hit on our hot buttons (upgradability, bloat,
> reliability, kernel versions, manufacturer support) with some sort of
> grading system...
>
> http://the-edge.taht.net/post/odroid_c1_plus/ in this case
>
> ...
>
> I got the odroid C1+ to work better. (either a cable or power supply
> issue, I swapped both). On output it peaks at about 416Mbits with 26%
> of cpu being spent in a softirq interrupt.  On input I can get it to
> gbit, with 220% of cpu in use.
>
> The rrul tests were pretty normal, aside from the apparent 400mbit
> upload limit causing contention on rx/tx (at the moment I have no good
> place to put these test results since snapon is now behind a firewall.
> I'd like to get more organized about how we store and index these
> results also)
>
> There is no BQL support in the odroid driver for it, and it ships with
> linux 3.10.80. At least its a LTS version.... I am totally unfamiliar
> with the odroid ecosystem but maybe there is active kernel dev on it
> somewhere?
>
> (The pi 2, on the other hand, is kernel 4.1.17-v7 AND only has a
> 100mbit phy, so it is hard to complain about only getting 400mbit from
> the odroid c1+, but, dang it, a much later kernel would be nice in the
> odroid)
>
> My goal in life, generally, is to have a set of boxes with known
> characteristics to drive tests with, that are reliable enough to setup
> once and ignore.
>
> A) this time around, I definitely wanted variety, particularly in tcp
> implementations, kernel versions, ethernet and wifi chips - as it
> seemed like drawing conclusions from "perfect" drivers like the e1000e
> all the time was a bad idea. We have a very repeatable testbed in
> karlstad, already - I'm interested in what random sort of traffic can
> exist on a home network that messes life up.
>
> One of the things I noticed while using kodi is that the box announces
> 2k of multicast ipv4 packets every 30 seconds or so on the upnp
> port... AND over 4k of multicast ipv6 packets, if ipv6 is enabled.
>
> B) Need to be able to drive 802.11ac as hard as possible with as many
> stations as possible.
>
> C) needs to be low power and quiet (cheap is good too!)
>
> Has anyone tried the banana pi? That's what comcast is using in their tests....
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