On Wed, Aug 19, 2009 at 3:24 PM, Brian Warner<[email protected]> wrote: > > Only if your downstream pipe is faster than the sum of the servers' > upstream (but only if those servers aren't doing anything else with > their upstream bandwidth). American DSL/cablemodem lines seem to mostly > have an 8-to-1 ratio between down and up. So if you assume a homogenous > mix of nodes, you don't get too much benefit from k>8.
Since we stream the file from all servers in lock-step parallel, your download bandwidth is equal to the bandwidth of your worst server times the number of servers (ignoring the possibility of multi-share-per-server). Here's one report, where I went from k=4 to k=13 and was then able to happily stream Master of Puppets (120 KB/s). http://allmydata.org/pipermail/tahoe-dev/2009-April/001554.html Regards, Zooko _______________________________________________ tahoe-dev mailing list [email protected] http://allmydata.org/cgi-bin/mailman/listinfo/tahoe-dev
