On Monday 05 January 2009 14:27, vive wrote: > On Tue, Dec 23, 2008 at 12:48:04PM +0000, Matthew Toseland wrote: > > On Tuesday 23 December 2008 03:14, vive wrote: > > > Simulation: > > > 0. Load the two networks, each of size 4000. All nodes are set to be pure > > darknet. > > > 1. Connect the networks by joining pairs of random nodes, where one node is > > picked from each network. I tried this with a cut of 10,100,1000,10000 links. > > > 2. Nodes randomize their positions and swap for a while to stabilize the > > locations (successful swaps get more uncommon after this) to start from > > a "stable" state > > > 3. 1000 keys are inserted by random nodes into the network (both sink and > > cache). Nodes have a store of 50 keys and a cache of 50 keys. Both are LRU as > > normal. > > > > Actually we use pseudo-random replacement now. This probably doesn't strongly > > affect the results. > > Is this documented? I was unable to find it. It would be great to have a place > on the wiki where the heuristics related to 1. Routing 2. Caching/Storing are > documented. Maybe at least a short description of each. This way, simulations > can be made more realistic and design decisions made more clear. Right now the > simulations do routing with backtracking as well as storing/caching according > to the sinking strategy (store) and LRU (both store and cache).
There are quite a few places on the wiki where parts of the design are documented ... these are usually way out of date. > > One could of course read the code ... but it may also be hard to get the > high-level description right-away from many details of lower-level code. :-) > Is it possible that someone who has insight into the details of the heuristics > could write a short description? The sinking strategy is simply that we cache in the store only when an insert is on a node which is closer to the target than any of its peers. Do you want more details on the routing heuristics? Or to start a more general debate on how much detailed internal documentation we should make, where we should put it etc? > > Cheers, > /vive
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