[Cerowrt-devel] Problems testing sqm

[Sebastian Moeller]

Hi David,

On Oct 23, 2015, at 19:57 , David Lang <david at lang.hm> wrote:

> On Fri, 23 Oct 2015, Aaron Wood wrote:
> 
>> On Fri, Oct 23, 2015 at 9:10 AM, Richard Smith <smithbone at gmail.com> wrote:
>> 
>>> I have a shiny new Linksys WRT1900ACS to test.
>>> 
>>> I thought it might be nice to start with some comparisons of factory
>>> firmware vs OpenWRT with sqm enabled.
>>> 
>> 
>> Here are my results with the same router (unless the WRT1900ACS is
>> different from the WRT1900AC):
>> http://burntchrome.blogspot.com/2015/06/sqmscripts-before-and-after-at-160mbps.html
> 
> the ACS has more flash (and ram IIRC) and is 1.6GHz instead of 1.2GHz
> 
> David Lang

	According to https://wikidevi.com/wiki/Marvell the wrt1900AC has an older marvell  MV78230 or armada XP SoC while both the wrt1200AC and the wrt1900ACS sport a newer 88F6820 or armada 385 SoC. I believe Mikael Abrahamsson tested the wrt1200AC to be quite competent as CPU based router and shaper, so I am puzzled with Richards results. Hopefully we will figure out the cause and fix/improve sqm…

Best Regards
	Sebastian

> 
>> 
>> 
>> 
>>> So I built and installed an openwrt trunk but the results were very
>>> non-impressive.  Rrul test reported mulit-seconds of latency and it was
>>> equally non-impressive with sqm enabled or disabled.  So I assumed that sqm
>>> in trunk on this device must not work yet.  Then I wondered how well sqm in
>>> trunk was tested and that perhaps its broken for all devices.
>>> 
>> 
>> Trunk or the Chaos Calmer release?  (I"m running CC RC1)
>> 
>> 
>>> My test setup:
>>> 
>>> Laptop<--1000BaseT-->DUT<--1000baseT-->Server
>>> 
>> 
>> Which ports on the DUT were you using?  are those local ports, or is one of
>> those the "internet" port?
>> 
>> -Aaron
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