[Cerowrt-devel] Torrents are too fast

[Dave Taht]

I would be surprised if you could tolerate a *single* big download
while watching a movie, at 4mbit/512k, much less torrents, which are 6
or more.

That said, most torrent clients are configurable in several ways.

1) You can limit the number of download flows to something far less
than 6. Try 1 or 2.

2) You can typically rate limit them in the client to a lower rate
during the day and a higher rate at night.

3) You can tell them to mark the torrents as background (QoS marking
CS1), but that only helps on uploads vs the simple.qos script.

At the router itself, you can try things like identifying torrent
traffic via a consistent port number (if you have one) to toss it into
the background queue , or try qos-scripts which has a layer 7 dpi
tool.




On Thu, Nov 20, 2014 at 6:13 AM, Dane Medic <dm70dm at gmail.com> wrote:
> dpreed, thank you for response. I'm already using fq_codel with cerowrt and
> I don't think it does what I want (or maybe I want too much :)
>
> So the steps I've made:
> flashed wndr3700v2 with cerowrt 3.10.50-1 then I've measured:
>
> root at cerowrt:/usr/lib/CeroWrtScripts# sh betterspeedtest.sh -p wlan-si.net
> -t 120
> 2014-11-20 12:18:34 Testing against netperf.bufferbloat.net (ipv4) with 5
> simultaneous sessions while pinging wlan-si.net (120 seconds in each
> direction)
> .........................................................................................................................
>  Download:  3.78 Mbps
>   Latency: (in msec, 119 pings, 0.00% packet loss)
>       Min: 13.077
>     10pct: 251.522
>    Median: 317.851
>       Avg: 308.497
>     90pct: 371.033
>       Max: 376.132
> ............................................................................................................................
>    Upload:  0.48 Mbps
>   Latency: (in msec, 103 pings, 0.00% packet loss)
>       Min: 12.278
>     10pct: 12.727
>    Median: 18.359
>       Avg: 23.256
>     90pct: 33.971
>       Max: 180.303
>
> Then I've put these commands:
>
> uci set sqm.ge00.enabled=1
> uci set sqm.ge00.download=3200
> uci set sqm.ge00.qdisc=nfq_codel
> uci commit sqm
> reboot
>
> And another measure:
>
> root at cerowrt:/usr/lib/CeroWrtScripts# sh betterspeedtest.sh -p wlan-si.net
> -t 120
> 2014-11-20 12:49:05 Testing against netperf.bufferbloat.net (ipv4) with 5
> simultaneous sessions while pinging wlan-si.net (120 seconds in each
> direction)
> .........................................................................................................................
>  Download:  2.74 Mbps
>   Latency: (in msec, 121 pings, 0.00% packet loss)
>       Min: 12.210
>     10pct: 13.002
>    Median: 15.077
>       Avg: 15.095
>     90pct: 16.968
>       Max: 18.599
> .............................................................................................................................
>    Upload:  0.49 Mbps
>   Latency: (in msec, 101 pings, 0.00% packet loss)
>       Min: 12.255
>     10pct: 12.684
>    Median: 16.679
>       Avg: 23.100
>     90pct: 34.019
>       Max: 170.173
>
> The tests doesn't look bad, but the problem is I watch a video clip on
> youtube and my sister starts torrent client, I can't watch anymore.
>
> Cheers
>
> _______________________________________________
> Cerowrt-devel mailing list
> Cerowrt-devel at lists.bufferbloat.net
> https://lists.bufferbloat.net/listinfo/cerowrt-devel
>



-- 
Dave Täht

thttp://www.bufferbloat.net/projects/bloat/wiki/Upcoming_Talks