[Cake] dual-src/dsthost unfairness, only with bi-directional traffic

[Pete Heist]

Thanks for working on it, looks promising! I’d be interested in hearing some more feedback if this is the right approach, but it looks like it from the experiments. I should be able to put some more testing time into it in a few days...

> On Jan 16, 2019, at 4:47 AM, <gamanakis at gmail.com> <gamanakis at gmail.com> wrote:
> 
> Of course I pasted the results for IP1 and IP2 the wrong way. Sorry!
> These are the correct results, along with the *.flent.gz files.
> 
> IP1: 
> flent -H 192.168.1.2 tcp_8down &
> Data file written to ./tcp_8down-2019-01-15T223703.709305.flent.gz.
> Summary of tcp_8down test run at 2019-01-16 03:37:03.709305:
> 
>                             avg       median          # data pts
> Ping (ms) ICMP   :         0.78         0.72 ms              342
> TCP download avg :         6.03         5.83 Mbits/s         301
> TCP download sum :        48.24        46.65 Mbits/s         301
> TCP download::1  :         6.03         5.83 Mbits/s         298
> TCP download::2  :         6.03         5.83 Mbits/s         297
> TCP download::3  :         6.03         5.83 Mbits/s         297
> TCP download::4  :         6.03         5.83 Mbits/s         298
> TCP download::5  :         6.03         5.83 Mbits/s         298
> TCP download::6  :         6.03         5.83 Mbits/s         298
> TCP download::7  :         6.03         5.83 Mbits/s         297
> TCP download::8  :         6.03         5.83 Mbits/s         298
> 
> 
> flent -H 192.168.1.2 tcp_1up &
> Data file written to ./tcp_1up-2019-01-15T223704.711193.flent.gz.
> Summary of tcp_1up test run at 2019-01-16 03:37:04.711193:
> 
>                           avg       median          # data pts
> Ping (ms) ICMP :         0.79         0.73 ms              342
> TCP upload     :        48.12        46.69 Mbits/s         294
> 
> 
> 
> IP2:
> flent -H 192.168.1.2 tcp_1down &
> Data file written to ./tcp_1down-2019-01-15T223705.693550.flent.gz.
> Summary of tcp_1down test run at 2019-01-16 03:37:05.693550:
> 
>                           avg       median          # data pts
> Ping (ms) ICMP :         0.77         0.69 ms              341
> TCP download   :        48.10        46.65 Mbits/s         300
> 
> 
> flent -H 192.168.1.2 tcp_8up &
> Data file written to ./tcp_8up-2019-01-15T223706.706614.flent.gz.
> Summary of tcp_8up test run at 2019-01-16 03:37:06.706614:
> 
>                           avg       median          # data pts
> Ping (ms) ICMP :         0.74         0.70 ms              341
> TCP upload avg :         6.03         5.83 Mbits/s         301
> TCP upload sum :        48.25        46.63 Mbits/s         301
> TCP upload::1  :         6.04         5.86 Mbits/s         226
> TCP upload::2  :         6.03         5.86 Mbits/s         226
> TCP upload::3  :         6.03         5.86 Mbits/s         226
> TCP upload::4  :         6.03         5.86 Mbits/s         225
> TCP upload::5  :         6.03         5.86 Mbits/s         226
> TCP upload::6  :         6.03         5.86 Mbits/s         226
> TCP upload::7  :         6.03         5.78 Mbits/s         220
> TCP upload::8  :         6.03         5.88 Mbits/s         277
> 
> 
> <tcp_8up-2019-01-15T223706.706614.flent.gz><tcp_8down-2019-01-15T223703.709305.flent.gz><tcp_1up-2019-01-15T223704.711193.flent.gz><tcp_1down-2019-01-15T223705.693550.flent.gz>