Johan Pouwelse

Raw measurements from paper above. example: "Measurements re-used with permission from [1]" [measurements.zip](https://github.com/Tribler/tribler/files/9503223/measurements.zip)

Current operational measurement scripts: https://github.com/vandenheuvel/libtorrent-latency-benchmark

ToDo for next meet, from [Libtorrent API docs](http://www.rasterbar.com/products/libtorrent/manual.html) + [tuning](http://www.rasterbar.com/products/libtorrent/tuning.html): - Understand performance tuning and experiment with various settings - Compile from source - `session_settings high_performance_seed();` - `outstanding_request_limit_reached` - `send_buffer_watermark_too_low`...

Background http://blog.libtorrent.org/2015/07/slow-start/ and http://blog.libtorrent.org/2011/11/requesting-pieces/ Easy fix: [high_performance_seed returns settings optimized for a seed box, serving many peers and that doesn't do any downloading. It has a 128 MB disk cache...

ToDo, try to obtain more resilience against latency in Libtorrent with single seeder, single leecher. Plus read [current research ](http://www.ohmygodel.com/publications/usersrouted-ccs13.pdf) on traffic correlation attacks. The [basics are covered here](https://blog.torproject.org/blog/traffic-correlation-using-netflows). Quote:...

Strange observation that it takes 60 to 100 seconds for speed to pick up. is the seeder side the bottleneck, due to anti-freeriding stuff? Please repeat multiple times and create...

good! next bottleneck...

The magic parameter setting are discovered now, resulting in 35MByte/s Libtorrent throughput. Next steps are to advance this throughput in Tribler and Tribler+tor-like circuits.  Please document your LXC containers....

1 Tribler seed + 1 Tribler leecher with normal Bittorrent with 200ms - 750ms latency is limited by congestion control. [Read the details here. To push Tribler towards 35MB/s with...

Very impressive work guys: | | libtorrent | Tribler | | ---|:---:|:---:| no latency | ~160 MB/s | 30 - 100 MB/s | 200 ms | ~15 MB/s | ~2.5...