p_mac Posted April 5, 2008 Report Share Posted April 5, 2008 I found that the setup instructions aren't very good for slow DSL (or dialup, EDGE, etc). Here are some useful changes.1. Don't use an experiment to determine bandwidth. You are likely to get lousy results. Use the bandwidth on your connection. On dialup, 6K is right. On slow DSL and EDGE, 10-30 is good. (Note that speeds are in kilobits per second (kilobaud), not kilobytes. You will still need to divide by 8.) Set the maximum to a value that makes for a convenient scale on the Detailed Info speed graph.2. Start the upload speed at 50% of theoretic max. Once you see an upload start, watch what happens to the download when the upload approaches its limit. If the download starts to oscillate, knock another 1K off the upload limit. I found that 50% is always low enough, but 75% will not be. DO NOT SET THE VALUE TOO LOW. Too low, and the max download value will also be reduced.In the BitTorrent preferences:3. Turn off DHT. Enable it only for new torrents. It is eating a steady 0.3-0.5Kbyte/second. 4. Turn on encryption, with FORCE and disable legacy. This will reduce the number of accessible peers, but the chances are, the peers that you disable are ones that are being throttled by at least one of the ISPs in the connection. Each throttled connection cuts throughput by A LOT. (It doesn't matter so much for a high-bandwidth network, because other peers are more able to take up the slack.)5. Set the max number of uploads a little higher than the default. It is unnecessarily conservative.6. Watch the speed graph for a while. The upload speed should drop to 0 (not to ~0.4) when it is idle, and the download speed should not show sympathetic oscillation with when upload speed is at or near its limit. (There will be a lot of jitter, but no approximately periodic waves.)7. Finally, if the number of peers you find is too small to keep your connection saturated, turn on DHT briefly, and turn off FORCED encryption. (This is very unlikely, unless you are using a private net or a really unpopular torrent.) Link to comment Share on other sites More sharing options...
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