[Cerowrt-devel] cerowrt 3.7.1-1 released

Thu Jan 3 12:02:13 PST 2013

On Thu, Jan 3, 2013 at 11:44 AM,  <dpreed at reed.com> wrote:
> I'm fine with the command line approach....  thanks!
>
>
>
> (is there anything special about how to run the "debloat" script? I assume
> it is a package that I download), but you can confirm that).

debloat runs on both std ubuntu/debian systems and openwrt and turns
off offloads via ethtool, and trims down

On ubuntu...

It is intended to run out of /etc/network/ifup.d, and as such does not
take command line arguments but environmental parameters.

e.g.

IFACE=wlan1 QMODEL=fq_codel debloat

On openwrt/cerowrt it runs out of /etc/hotplug.d/iface/00-debloat

There are tons of QMODEL options, see the bottommost portion of
"debloat" for the callbacks.

There are various options, like QDEBUG=1, which dumps the commands fed
to tc to stdout and a lot of bad-out-of-date documentation inside it.
It started life as a wrapper around qfq and has grown rather
embarrassingly bloated over time.

One major bug is that it does not detect bridged interfaces presently.

The simple_qos.sh script relies on it to set the tricky parameters
that it overrides.

> And which queue should have ecn disabled?

in the simple_qos.sh script I have been disabling ecn on egress
universally. It's on on ingress.

Note that this script is intended for a rate limited ethernet device, not wifi.

Of late, for wifi, I have been disabling ecn on wifi on the vo queue
and the background queue. There are various variants of the debloat
script (for wifi, ethernet, and various variants of codel, Xfq_codel,
and QFQ) in play at the moment.

>
>
>
> -----Original Message-----
> From: "Dave Taht" <dave.taht at gmail.com>
> Sent: Thursday, January 3, 2013 2:30pm
> To: dpreed at reed.com
> Cc: cerowrt-devel at lists.bufferbloat.net
> Subject: Re: [Cerowrt-devel] cerowrt 3.7.1-1 released
>
> On Thu, Jan 3, 2013 at 10:50 AM, <dpreed at reed.com> wrote:
>> Perhaps this is premature, but I have installed 3.7.1-1 on my experimental
>
> I'm happy with 3.7.1 from a reliability perspective.
>
> I've got 8 routers deployed on it now for testing, no crashes, good
> performance, I'm happy.
>
> Still need some features to land in iptables and gui work, and dnsmasq
> to get out of beta and I'd like to finish up simple_qos to become
> ceroshaper...
>
> etc...
>
> but go for it!
>
>> router as well. It seems to be working fine but now I'd like to start
>> capturing monitoring data from the AQM (nfq_codel is enabled by default?)
>> layer.
>>
>>
>>
>> I'd also like to change the "WAN interface" to be one of its 2.4 Gig
>> radios.
>> That's because I want to put the Cerowrt experimental router "in front of"
>> a
>> mobile hotspot that is operating using LTE to provide my internet access.
>> (Yes, I know that "in general" WLAN's need something better than
>> nfq_codel,
>
> In this case nfq_codel is on ALL 4 wifi queues, so you will need to
> parse those. Also the debloat script modifies the size of those queues
> significantly vs a vs a default openwrt setup.
>
> Also I disable ecn on at least one queue...
>
>> but in this case, it's a single device and a single hop - i.e. cable
>> equivalent). Alternatively, maybe I can connect the mobile hotspot to the
>> router using USB.
>>
>>
>>
>> Best way to do that? I have not delved deep into OpenWRT/Cerowrt config
>> files.
>
> Well, I'm a command line guy, but you can do all this via the gui if
> you do it all in one go. However:
>
> In /etc/config/firewall:
>
> Change the ge00 entry to the wifi device you are going to use - this
> will turn on nat for that device.
>
> Replace the wifi interface with ge00 on the other entries in the firewall.
>
> In /etc/quagga/babeld.conf for the wifi device you are going to use.
> Enable it for ge00 if you are going to use that for something.
>
> Assuming you are using dhcp on your wifi...
>
> in /etc/config/network
>
> ...Basically swap the ge00 and wifi entries...
>
> in /etc/config/wireless
>
> Enable "sta" mode for the wifi interface you are going to use. (mildly
> easier to get this right via the gui)
>
> in /etc/config/dhcp
>
> disable dhcp service on the wifi interface you are going to use
>
> cross fingers, make a small blood sacrifice to Murphy, reboot.
>
> I note that both vi and zile (emacs) are installed from a command line
> perspective.
>
> ...
>
> As for the usb approach, I think usb-net is built, but have not tried
> it recently. There used to be support for several 3g usb-modems, in
> fact, installable via opkg.
>
>>
>>
>>
>> -----Original Message-----
>> From: "Dave Taht" <dave.taht at gmail.com>
>> Sent: Wednesday, January 2, 2013 5:03am
>> To: cerowrt-devel at lists.bufferbloat.net
>> Subject: [Cerowrt-devel] cerowrt 3.7.1-1 released
>>
>> Two formerly back-ordered 3800s arrived yesterday!
>>
>> They barely had time to power on before I reflashed them with:
>>
>> http://snapon.lab.bufferbloat.net/~cero2/cerowrt/wndr/3.7.1-1/
>>
>> I still regard this series as heavily development oriented and
>> unsuitable for general use. In particular I'd like to wait for dnsmasq
>> to come out of beta, fix AHCP, add a gui for the ceroshaper, etc, etc.
>>
>> But: This is the first devel release I've been able to test in the
>> real world as a default gw in a while. So far, so good.
>>
>> I have some issues with how the new network6 configuration stuff
>> interacts with ahcp, but aside from that... I saw upnp work for the
>> first time... saw the ula auto code work... analyzed some dropbox and
>> netflix traffic, ran a couple android boxes through it, fiddled with
>> nfq_codel...
>>
>> some notes:
>>
>> + resync with openwrt head
>> + update to Linux 3.7.1 with unaligned patches from robert bradley
>> + A QFQ+ update
>> + mildly improved nfq_codel
>> - Missing cups support (didn't compile
>> - no ipv6 npt yet
>>
>> Merry New Year!
>>
>> --
>> Dave Täht
>>
>> Fixing bufferbloat with cerowrt:
>> http://www.teklibre.com/cerowrt/subscribe.html
>> _______________________________________________
>> Cerowrt-devel mailing list
>> Cerowrt-devel at lists.bufferbloat.net
>> https://lists.bufferbloat.net/listinfo/cerowrt-devel
>
>
>
> --
> Dave Täht
>
> Fixing bufferbloat with cerowrt:
> http://www.teklibre.com/cerowrt/subscribe.html

-- 
Dave Täht

Fixing bufferbloat with cerowrt: http://www.teklibre.com/cerowrt/subscribe.html