Re: [Cerowrt-devel] 3.10.11-2 development build debloat bug

[Dave Taht <dave.taht@gmail.com>]

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I have pushed out a 3.10.11-3 that has the encapsulation fixes for fred,
and the fix for debloat. (It is otherwise untested, as is seemingly growing
more usual for me)

Isolating wifi problems is very hard. The first step is finding and
eliminating other sources of interference on the channels you are on or
migrating to a different channel. There are multiple halfway decent
scanning tools, a couple referenced here:

https://plus.google.com/u/0/107942175615993706558/posts/PHPR7uL89Sq

On the 5ghz spectrum you usually have more channels available, so nothing
as fancy and graphical is needed (IMHO, but I'm a command line guy) so a
simple iwlist gw11 scanning will show the ones in use, and then you can
often find a clear channel from the approved list.

I note that the 5ghz radio in cero is set to HT40+ - so being on channel 36
"bleeds" over onto 40. Some data indicates that competing with another AP
on HT20 channel 40  (or some other competing set of channels) can be very
bad. So you should try to find a HT40+ clear set of channels that are legal
for your country, or go back to HT20 if you can't find a safe pair to use.

http://en.wikipedia.org/wiki/List_of_WLAN_channels




On Fri, Sep 13, 2013 at 3:01 AM, Sebastian Moeller <moeller0@gmx.de> wrote:

> Hi Dave,
>
>
>
> On Sep 12, 2013, at 06:18 , Dave Taht <dave.taht@gmail.com> wrote:
>
> > Well, actually, I don't know when the syntax changed, but now the -b
> option needs a
> >                             -
> > for reading from standard input. Boy this file is getting crufty...
> >
> > cero2@snapon:~/src/ceropackages-3.3/net/debloat/files$ git diff debloat
> > diff --git a/net/debloat/files/debloat b/net/debloat/files/debloat
> > index e675008..d1cf939 100755
> > --- a/net/debloat/files/debloat
> > +++ b/net/debloat/files/debloat
> > @@ -29,7 +29,7 @@ params = { "MDISC", "BIGDISC", "NORMDISC", "BINS",
> "MAX_HWQ_BY
> >  -- Useful defaults
> >
> >  env = { ["TC"] = "/sbin/tc",
> > -       ["TCARG"] = "-b",
> > +       ["TCARG"] = "-b -",
> >         ["INSMOD"] = "/sbin/modprobe",
> >          ["ETHTOOL"] = "/sbin/ethtool",
> >         ["LSMOD"] = "/sbin/lsmod",
> > (END)
>
>         Thanks that fixed the non-ge00 interfaces. As to the abysmal
> performance with macosx over 5GHz wlan, that still is there, but I suspect
> the macbok to be the culprit here (plus the wlan connection is somewhere
> ion the edge between changing transmigrates so might be a moving target).
>
>
> Many thanks
>         Sebastian
>
>
>
> >
> >
> >
> >
> > On Wed, Sep 11, 2013 at 9:10 PM, Dave Taht <dave.taht@gmail.com> wrote:
> >
> >
> >
> > On Wed, Sep 11, 2013 at 1:36 AM, Sebastian Moeller <moeller0@gmx.de>
> wrote:
> > Hi Dave,
> >
> > so I ant for the shiny 3.10.11-2, worked great (using Fred's mtd -r
> method, thanks Fred)
> >
> >
> > On Sep 10, 2013, at 02:28 , Dave Taht <dave.taht@gmail.com> wrote:
> >
> > > + readlink fix (hopefully fixes sysupgrade)
> >         I guess this will be testable at the next version update...
> >
> > > + usual merge with openwrt head (tons of ath9k changes)
> >         Oh, as if you knew that I had a number of:
> >                 ath: phy1: Failed to stop TX DMA, queues=
> >         lines in dmesg, quick testing did not allow me to get those with
> 3.10.11-2, but I will need to test further...
> >
> > > + dnsmasq 2.67test10
> > > + ipv6subtrees back in
> > > + the final htb atm patches
> >
> >         So I tested tc_stab and htb_private from the AQM tab, both work
> equally well.
> >
> > > + eliminated maxpacket check in codel
> > >
> > > - did not fold in edumazet's new fq code
> > > - 100% totally untested. May a braver soul than I give it a shot. I
> won't be near a cero box til thursday, otherwise.
> > >
> > > http://snapon.lab.bufferbloat.net/~cero2/cerowrt/wndr/3.10.10-1/
> > >
> > > -I'm not sure if I got the "last" of the aqm gui patches in there or
> not…
> >
> >         I think so, at least it works :)
> >
> > >
> > > ...
> > >
> > > Anyway... I had hopes to get a stable release out in august. I AM very
> happy about the major stuff that got fixed, instead... but...
> > >
> > > Since we didn't... I now have a ton of other matters piled up. Not
> least of which is a pending trip to england and the eu.
> >
> >         Have a great trip.
> >
> >
> > oh, this guilts me!  ;)
> >
> > >
> > > So for the next month I don't see how I'm going to be able to put more
> than a day a week into cerowrt. Tops. So I have tagged up this "release"
> and pushed all the baked portions of the sources to github.
> >
> >         Thanks a lot.
> >
> > > I'm still a little dubious of the ipv6 subtrees bit….
> >
> >         RRUL-Testing against Toke's server shows great results, local
> rrul testing between osx 10.8.4 machine on sw10 to a net server running on
> an linux x86_64 3.10.1 machine on se00 is quite bad though (I assume I now
> run into the wifi issues on the macbook or the router as this is the first
> time I test against a machine with considerable larger bandwidth than the
> wlan). The rrul plots still are quite interesting, as I could nicely see
> anticoorelation between up and down bandwidth (shared medium)
> >
> >
> > No, its possible we have a new problem...
> >
> > If I get round to it I would like to re-enable fq_codel on all
> interfaces (now it is just running at ge00/ifb0) to see whether this can
> ameliorate the issue at least a bit.
> >
> > Note, I enabled the log for /usr/sbin/deblaot (by
> editing/etc/hotplug.d/iface/00-debloat) and got the following:
> > root@nacktmulle:~# cat /tmp/debloat.log
> > fq_codel_ll
> > fq_codel_ll
> > fq_codel_ll
> > fq_codel_ll
> > root@nacktmulle:~# cat /tmp/debloat2.log
> >
> >
> > No. This behavior is new.
> >
> > I used to be able to
> >
> > contents of /tmp/wtf:
> >
> > qdisc change dev sw10 parent 1:1 handle 10 fq_codel limit 500 quantum
> 1000
> > qdisc change dev sw10 parent 1:2 handle 20 fq_codel limit 1000 quantum
> 1000
> > qdisc change dev sw10 parent 1:3 handle 30 fq_codel limit 1000 quantum
> 1000
> > qdisc change dev sw10 parent 1:4 handle 40 fq_codel limit 1000 quantum
> 1000
> >
> > and then
> > cat /tmp/wtf | tc
> >
> > Usage: tc [ OPTIONS ] OBJECT { COMMAND | help }
> >        tc [-force] -batch filename
> > where  OBJECT := { qdisc | class | filter | action | monitor }
> >        OPTIONS := { -s[tatistics] | -d[etails] | -r[aw] | -p[retty] |
> -b[atch] [filename] }
> >
> >
> >
> > Which is how the debloat script historically did everything. Now the
> only syntax that works is:
> >
> > root@cerowrt:/etc/hotplug.d/iface# tc -b /tmp/wtf
> >
> > I think this is a regression in tc
> >
> >
> > Usage: tc [ OPTIONS ] OBJECT { COMMAND | help }
> >        tc [-force] -batch filename
> > where  OBJECT := { qdisc | class | filter | action | monitor }
> >        OPTIONS := { -s[tatistics] | -d[etails] | -r[aw] | -p[retty] |
> -b[atch] [filename] }
> > Usage: tc [ OPTIONS ] OBJECT { COMMAND | help }
> >        tc [-force] -batch filename
> > where  OBJECT := { qdisc | class | filter | action | monitor }
> >        OPTIONS := { -s[tatistics] | -d[etails] | -r[aw] | -p[retty] |
> -b[atch] [filename] }
> > Usage: tc [ OPTIONS ] OBJECT { COMMAND | help }
> >        tc [-force] -batch filename
> > where  OBJECT := { qdisc | class | filter | action | monitor }
> >        OPTIONS := { -s[tatistics] | -d[etails] | -r[aw] | -p[retty] |
> -b[atch] [filename] }
> > Usage: tc [ OPTIONS ] OBJECT { COMMAND | help }
> >        tc [-force] -batch filename
> > where  OBJECT := { qdisc | class | filter | action | monitor }
> >        OPTIONS := { -s[tatistics] | -d[etails] | -r[aw] | -p[retty] |
> -b[atch] [filename] }
> > Usage: tc [ OPTIONS ] OBJECT { COMMAND | help }
> >        tc [-force] -batch filename
> > where  OBJECT := { qdisc | class | filter | action | monitor }
> >        OPTIONS := { -s[tatistics] | -d[etails] | -r[aw] | -p[retty] |
> -b[atch] [filename] }
> > Usage: tc [ OPTIONS ] OBJECT { COMMAND | help }
> >        tc [-force] -batch filename
> > where  OBJECT := { qdisc | class | filter | action | monitor }
> >        OPTIONS := { -s[tatistics] | -d[etails] | -r[aw] | -p[retty] |
> -b[atch] [filename] }
> > Usage: tc [ OPTIONS ] OBJECT { COMMAND | help }
> >        tc [-force] -batch filename
> > where  OBJECT := { qdisc | class | filter | action | monitor }
> >        OPTIONS := { -s[tatistics] | -d[etails] | -r[aw] | -p[retty] |
> -b[atch] [filename] }
> > Usage: tc [ OPTIONS ] OBJECT { COMMAND | help }
> >        tc [-force] -batch filename
> > where  OBJECT := { qdisc | class | filter | action | monitor }
> >        OPTIONS := { -s[tatistics] | -d[etails] | -r[aw] | -p[retty] |
> -b[atch] [filename] }
> > Usage: tc [ OPTIONS ] OBJECT { COMMAND | help }
> >        tc [-force] -batch filename
> > where  OBJECT := { qdisc | class | filter | action | monitor }
> >        OPTIONS := { -s[tatistics] | -d[etails] | -r[aw] | -p[retty] |
> -b[atch] [filename] }
> > Usage: tc [ OPTIONS ] OBJECT { COMMAND | help }
> >        tc [-force] -batch filename
> > where  OBJECT := { qdisc | class | filter | action | monitor }
> >        OPTIONS := { -s[tatistics] | -d[etails] | -r[aw] | -p[retty] |
> -b[atch] [filename] }
> > Usage: tc [ OPTIONS ] OBJECT { COMMAND | help }
> >        tc [-force] -batch filename
> > where  OBJECT := { qdisc | class | filter | action | monitor }
> >        OPTIONS := { -s[tatistics] | -d[etails] | -r[aw] | -p[retty] |
> -b[atch] [filename] }
> > Usage: tc [ OPTIONS ] OBJECT { COMMAND | help }
> >        tc [-force] -batch filename
> > where  OBJECT := { qdisc | class | filter | action | monitor }
> >        OPTIONS := { -s[tatistics] | -d[etails] | -r[aw] | -p[retty] |
> -b[atch] [filename] }
> > Usage: tc [ OPTIONS ] OBJECT { COMMAND | help }
> >        tc [-force] -batch filename
> > where  OBJECT := { qdisc | class | filter | action | monitor }
> >        OPTIONS := { -s[tatistics] | -d[etails] | -r[aw] | -p[retty] |
> -b[atch] [filename] }
> > Usage: tc [ OPTIONS ] OBJECT { COMMAND | help }
> >        tc [-force] -batch filename
> > where  OBJECT := { qdisc | class | filter | action | monitor }
> >        OPTIONS := { -s[tatistics] | -d[etails] | -r[aw] | -p[retty] |
> -b[atch] [filename] }
> > Usage: tc [ OPTIONS ] OBJECT { COMMAND | help }
> >        tc [-force] -batch filename
> > where  OBJECT := { qdisc | class | filter | action | monitor }
> >        OPTIONS := { -s[tatistics] | -d[etails] | -r[aw] | -p[retty] |
> -b[atch] [filename] }
> > Usage: tc [ OPTIONS ] OBJECT { COMMAND | help }
> >        tc [-force] -batch filename
> > where  OBJECT := { qdisc | class | filter | action | monitor }
> >        OPTIONS := { -s[tatistics] | -d[etails] | -r[aw] | -p[retty] |
> -b[atch] [filename] }
> >
> >
> > Not sure whether that is new, as I never enabled the logs before. I
> guess I will see what causes these… (I assume an improper set of arguments
> to tc). And now I am trying to ind my way around debloat, but lua is
> totally new to me...
> >
> >
> > Best Regards & many thanks
> >         Sebastian
> >
> >
> >
> > >
> > >
> > >
> > > --
> > > Dave Täht
> > >
> > > Fixing bufferbloat with cerowrt:
> http://www.teklibre.com/cerowrt/subscribe.html
> > > _______________________________________________
> > > Cerowrt-devel mailing list
> > > Cerowrt-devel@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
>
>


-- 
Dave Täht

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

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