Re: [Cerowrt-devel] 3.10.36-1 dev build released

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

While mtr is at best an unreliable measurement, your data certainly
points to problems on the ipv6 portion of the path leading to your
reduced ipv6 throughput figures.

You might want to find another he gateway closer to you to use, or
one better connected. he has pretty good forums if you'd like to engage
them there...


On Sat, Apr 5, 2014 at 9:48 PM, Chuck Anderson <cra@wpi.edu> wrote:
> On Sat, Apr 05, 2014 at 05:57:44PM -0700, Dave Taht wrote:
>> On Sat, Apr 5, 2014 at 5:08 PM, Chuck Anderson <cra@wpi.edu> wrote:
>> > And IPv6 over the HE tunnel:
>> >
>> > root@cerowrt:~# sh betterspeedtest.sh -H netperf6.richb-hanover.com
>> > Testing against netperf6.richb-hanover.com while pinging gstatic.com (60 seconds in each direction)
>> > ............................................................................
>> >  Download:  21.56 Mbps
>> >   Latency: (in msec, 77 pings, 0.00% packet loss)
>> >       Min: 14.477
>> >     10pct: 15.469
>> >    Median: 17.646
>> >       Avg: 18.906
>> >     90pct: 23.540
>> >       Max: 36.302
>> > ............................................................................
>> >    Upload:  5.85 Mbps
>> >   Latency: (in msec, 76 pings, 0.00% packet loss)
>> >       Min: 14.589
>> >     10pct: 15.579
>> >    Median: 18.156
>> >       Avg: 18.323
>> >     90pct: 21.192
>> >       Max: 25.282
>>
>> That's pretty lame compared to your ipv4 results, but the length of
>> the path looks the same... puzzling... How much further (or less far)
>> is rich's box (traceroute6 -n netperf6.richb-hanover.com) on ipv6 vs
>> ipv4 (traceroute -n )
>
> Without any testing going on:
>
>                              My traceroute  [v0.82]
> a (::)                                                 Sun Apr  6 00:35:55 2014
> Keys:  Help   Display mode   Restart statistics   Order of fields   quit
>                                        Packets               Pings
>  Host                                Loss%   Snt   Last   Avg  Best  Wrst StDev
>  1. 2001:470:89c6:3::1                0.0%    25    1.7   1.7   1.4   3.4   0.4
>  2. canderson-2.tunnel.tserv4.nyc4.i  0.0%    25   25.3  22.5  20.6  27.6   1.5
>  3. ge3-8.core1.nyc4.he.net           0.0%    25   17.2  21.1  16.0  37.6   5.3
>  4. 100ge5-1.core1.ash1.he.net        0.0%    25   25.2  25.7  21.4  34.9   3.7
>  5. xe-0.equinix.asbnva01.us.bb.gin. 33.3%    25   32.7  25.1  22.2  32.7   2.7
>  6. ae-6.r20.asbnva02.us.bb.gin.ntt.  0.0%    25   24.0  27.3  22.5  41.3   5.0
>  7. ae-3.r04.atlnga05.us.bb.gin.ntt.  0.0%    25   43.9  40.4  36.7  53.3   4.5
>  8. xe-0-1-0-17.r04.atlnga05.us.ce.g  0.0%    25   47.8  41.5  35.7  50.3   4.5
>  9. ???
> 10. 2604:180::65be:a189               0.0%    24   37.7  37.9  35.8  40.1   1.3
>
>
>                              My traceroute  [v0.82]
> a (0.0.0.0)                                            Sun Apr  6 00:37:12 2014
> Keys:  Help   Display mode   Restart statistics   Order of fields   quit
>                                        Packets               Pings
>  Host                                Loss%   Snt   Last   Avg  Best  Wrst StDev
>  1. 172.30.42.65                      0.0%    26    1.5   1.6   1.3   5.7   0.8
>  2. ???
>  3. te-0-0-0-11-sur02.woburn.ma.bost  0.0%    25   25.1  11.0   8.8  25.1   3.4
>  4. be-62-ar01.needham.ma.boston.com  0.0%    25   87.9  65.4  10.4 684.5 168.8
>  5. he-2-7-0-0-cr01.newyork.ny.ibone  0.0%    25   15.7  19.9  15.7  27.6   2.9
>  6. ???
>  7. ae3.nyc32.ip4.tinet.net           0.0%    25   28.6  23.2  16.0  49.7   9.1
>  8. xe-4-3-0.atl11.ip4.tinet.net      0.0%    25   50.3  49.3  46.4  66.2   4.7
>  9. ramnode-gw.ip4.tinet.net          0.0%    25   47.0  50.9  46.8  58.7   3.8
> 10. ???
> 11. 23.226.232.80                     0.0%    25   47.8  48.6  46.8  57.2   2.2
>
>
>>
>> I have certainly seen bottlenecks, excessive delay, and packet loss on
>> he's gateways.
>>
>> An "mtr" might be revealing during the test for spotting packet loss
>> further on the path.
>
> SQM is now set to 60000/10000.
>
> During the IPv6 test:
>
>                              My traceroute  [v0.82]
> a (::)                                                 Sun Apr  6 00:41:12 2014
> Keys:  Help   Display mode   Restart statistics   Order of fields   quit
>                                        Packets               Pings
>  Host                                Loss%   Snt   Last   Avg  Best  Wrst StDev
>  1. 2001:470:89c6:3::1                0.0%   138    2.7   1.8   1.2  17.7   1.4
>  2. canderson-2.tunnel.tserv4.nyc4.i  0.0%   138   22.9  25.2  20.0  62.9   5.2
>  3. ge3-8.core1.nyc4.he.net           0.0%   137   22.5  25.0  16.2 143.6  11.9
>  4. 100ge5-1.core1.ash1.he.net        0.0%   137   22.6  29.0  21.2  72.7   7.1
>  5. xe-0.equinix.asbnva01.us.bb.gin. 40.1%   137   25.7  31.1  22.4 147.9  16.6
>  6. ae-6.r20.asbnva02.us.bb.gin.ntt.  0.0%   137   22.9  29.5  22.1  72.0   8.2
>  7. ae-3.r04.atlnga05.us.bb.gin.ntt. 11.7%   137   37.1  41.4  36.2  74.5   5.4
>  8. xe-0-1-0-17.r04.atlnga05.us.ce.g  0.0%   137   39.9  43.6  35.8  79.9   6.8
>  9. ???
> 10. 2604:180::65be:a189               0.0%   137   36.6  41.1  36.0  59.8   4.5
>
>
> root@cerowrt:~# sh betterspeedtest.sh -H netperf6.richb-hanover.com
> Testing against netperf6.richb-hanover.com while pinging gstatic.com (60 seconds in each direction)
> ..........................................................................
>  Download:  27.2 Mbps
>   Latency: (in msec, 76 pings, 0.00% packet loss)
>       Min: 14.666
>     10pct: 15.606
>    Median: 18.254
>       Avg: 21.101
>     90pct: 29.038
>       Max: 55.143
> ...........................................................................
>    Upload:  6.57 Mbps
>   Latency: (in msec, 76 pings, 0.00% packet loss)
>       Min: 14.753
>     10pct: 15.233
>    Median: 17.599
>       Avg: 17.591
>     90pct: 19.674
>       Max: 24.718
>
> IPv4 test:
>
> root@cerowrt:~# sh betterspeedtest.sh
> Testing against netperf.richb-hanover.com while pinging gstatic.com (60 seconds in each direction)
> ............................................................
>  Download:  46.11 Mbps
>   Latency: (in msec, 61 pings, 0.00% packet loss)
>       Min: 16.011
>     10pct: 16.463
>    Median: 19.134
>       Avg: 19.743
>     90pct: 22.525
>       Max: 28.650
> ............................................................
> .   Upload:  8.97 Mbps
>   Latency: (in msec, 61 pings, 0.00% packet loss)
>       Min: 16.214
>     10pct: 16.904
>    Median: 19.154
>       Avg: 19.151
>     90pct: 20.989
>       Max: 22.683
>
>> > On Sat, Apr 05, 2014 at 08:02:37PM -0400, Chuck Anderson wrote:
>> >> Here are some betterspeedtest.sh results for 3.10.36-1:
>> >>
>> >> First, without SQM enabled:
>> >>
>> >> root@cerowrt:~# sh betterspeedtest.sh
>> >> Testing against netperf.richb-hanover.com while pinging gstatic.com (60 seconds in each direction)
>> >> ............................................................
>> >>  Download:  52.39 Mbps
>> >>   Latency: (in msec, 61 pings, 0.00% packet loss)
>> >>       Min: 15.281
>> >>     10pct: 18.302
>> >>    Median: 28.502
>> >>       Avg: 32.891
>> >>     90pct: 56.776
>> >>       Max: 74.282
>> >> .............................................................
>> >>    Upload:  11.07 Mbps
>> >>   Latency: (in msec, 61 pings, 0.00% packet loss)
>> >>       Min: 15.341
>> >>     10pct: 18.669
>> >>    Median: 82.480
>> >>       Avg: 126.662
>> >>     90pct: 248.102
>> >>       Max: 278.644
>> >>
>> >> And now, with SQM set to 80% up/down numbers from above:
>> >>
>> >> root@cerowrt:~# sh betterspeedtest.sh
>> >> Testing against netperf.richb-hanover.com while pinging gstatic.com (60 seconds in each direction)
>> >> ............................................................
>> >>  Download:  32.84 Mbps
>> >>   Latency: (in msec, 61 pings, 0.00% packet loss)
>> >>       Min: 15.623
>> >>     10pct: 16.077
>> >>    Median: 17.634
>> >>       Avg: 17.982
>> >>     90pct: 19.653
>> >>       Max: 23.272
>> >> .............................................................
>> >>    Upload:  8.25 Mbps
>> >>   Latency: (in msec, 61 pings, 0.00% packet loss)
>> >>       Min: 16.001
>> >>     10pct: 17.623
>> >>    Median: 19.796
>> >>       Avg: 19.820
>> >>     90pct: 21.716
>> >>       Max: 23.228
>> >> root@cerowrt:~#
>> >>
>> >>
>> >> On Sat, Apr 05, 2014 at 01:18:51PM -0700, Dave Taht wrote:
>> >> > + openwrt merge
>> >> > ++ fix for dhcpv6 renew problem
>> >> > + actually tested for an hour so far on 5.4ghz, with a us countrycode
>> >> > and wpa+psk enabled...
>> >> >
>> >> > Get it at:
>> >> >
>> >> > http://snapon.lab.bufferbloat.net/~cero2/cerowrt/wndr/3.10.36-1/
>> >> >
>> >> > but: there isn't much other reason to upgrade to this...
>> >> >
>> >> > - no progress on the wifi bug - but I am beating up wifi with a variety of
>> >> > devices and scripts today hoping to make it fail, and bringing up a
>> >> > bunch more tomorrow.
>> >> >
>> >> > - toke's script relies on stratum '16' changing, and it doesn't with openwrt's
>> >> > ntp, it seems....
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-- 
Dave Täht

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