You may see much better throughput if you run a few servers around the globe and test based on closest-by-geoip. TCP throughput is rather significantly effected by latency, though I'm not really sure what you should be testing here, ideally.
On 07/23/15 14:19, slurms--- via bitcoin-dev wrote: > On this day, the Bitcoin network was crawled and reachable nodes surveyed to > find their maximum throughput in order to determine if it can safely support > a faster block rate. Specifically this is an attempt to prove or disprove the > common statement that 1MB blocks were only suitable slower internet > connections in 2009 when Bitcoin launched, and that connection speeds have > improved to the point of obviously supporting larger blocks. > > > The testing methodology is as follows: > > * Nodes were randomly selected from a peers.dat, 5% of the reachable nodes > in the network were contacted. > > * A random selection of blocks was downloaded from each peer. > > * There is some bias towards higher connection speeds, very slow connections > (<30KB/s) timed out in order to run the test at a reasonable rate. > > * The connecting node was in Amsterdam with a 1GB NIC. > > > Results: > > * 37% of connected nodes failed to upload blocks faster than 1MB/s. > > * 16% of connected nodes uploaded blocks faster than 10MB/s. > > * Raw data, one line per connected node, kilobytes per second > http://pastebin.com/raw.php?i=6b4NuiVQ > > > This does not support the theory that the network has the available bandwidth > for increased block sizes, as in its current state 37% of nodes would fail to > upload a 20MB block to a single peer in under 20 seconds (referencing a > number quoted by Gavin). If the bar for suitability is placed at taking only > 1% of the block time (6 seconds) to upload one block to one peer, then 69% of > the network fails for 20MB blocks. For comparison, only 10% fail this metric > for 1MB blocks. > _______________________________________________ > bitcoin-dev mailing list > bitcoin-dev@lists.linuxfoundation.org > https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev > _______________________________________________ bitcoin-dev mailing list bitcoin-dev@lists.linuxfoundation.org https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev
