First of all, I like your calculations very much and I wonder why nobody calculated this before FEC was implemented. If I understood this correctly then a 700mib file with block success rate p=0.58 will have a 48% total success chance. This sucks...
On Saturday 13 February 2010 20:09:46 Evan Daniel wrote: > For files of 20 segments (80 MiB) or more, we move to the > double-layered interleaved scheme. I'm working on the interleaving > code still (it isn't optimal for all numbers of data blocks yet). The > simple segmenting scheme is better for smaller files, and the > interleaved scheme for large ones. At 18 segments, the segmentation > does better. By 20 segments, the interleaved code is slightly better. > By 25 segments, the difference is approaching a 1.5x reduction in > failure rates. (Details depend on block success rate. I'll post them > on the bug report shortly.) > I wonder why you do not want the interleaved scheme for all multi-segment files? Why the arbitrary choice of 80 MiB files? It would suck if then people started to artificially bloat 50MiB files up to 80MiB to improve their success rates...
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