[Cerowrt-devel] Problems testing sqm

Richard Smith smithbone at gmail.com
Fri Oct 23 14:05:20 EDT 2015

On 10/23/2015 01:38 PM, Sebastian Moeller wrote:

>> So at this point I'm thinking there's a PEBKAC issue and I'm not
>> really turning it on.
> Well, it might be lack of documentation… (on my todo list, but way
> way back there, sorry).

:)  No worries.

> The best test (for validity of the configuration) is to run the
> following on the router and preferably copy and post the output to
> this thread:
> 1) tc -d qdisc 2) /etc/init.d/sqm stop 3) tc -d qdisc 4)
> /etc/init.d/sqm start 5) tc -d qdisc

Thank you.  I'll verify things with that.

>> My test setup:
>> Laptop<--1000BaseT-->DUT<--1000baseT—>Server
> What does DUT expand to?

Device Under Test. ie the 1900ACS or 3700v2

>> I run netperf-wrapper -H Server -l 30 rrul and look at the
>> 'totals' or 'all' plot.
> I routinely look at the all_scaled plot as well as the totals, often
> the time course offers some explanation why the total looks bad,
> maybe you could post the plot here?

Certainly.  I thought about sending one along but wanted to wait and
verify I wasn't doing something stupid first.  I can just send up the 
rrul log file.  Probably don't want to send it to the list though.
I'll include a download link via google drive.

>> Ah... That would explain everything.  Indeed, I missed that part.
>> Thank you for noticing that.
> I believe at least the version in trunk should handle hat for you,
> but that might be broken, so please help me figuring this out, so I
> can fix up sqm-scripts.

Thank you for the confirmation.  I'll verify yes/no on trunk this weekend.

Thanks everyone for the helpful suggestions and stuff to look at.

Richard A. Smith

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