On Monday 29 Aug 2011 20:09:58 Matthew Toseland wrote: > On Monday 29 Aug 2011 19:28:50 Ian Clarke wrote: > > Ok, thinking about it, here is a proposal, or rather, the beginning of a > > proposal. I'm assuming that we get rid of NLM, fair sharing, and anything > > else intended to control load, and replace it with this. We will absolutely > > need to simulate this before we write a single line of code to deploy it. > > I have justified fair sharing in my other reply. However alternate mechanisms > might replace it. > > I agree we should simulate, although this might be significant work. > > > > The core idea is that a node will include a floating point number in > > response to any kind of request showing how close that node is to being > > overloaded. 0.0 would mean its doing nothing, 1.0 would mean that it is > > completely saturated and must reject requests. Clearly the goal is to avoid > > getting anywhere near to 1.0. > > > > A node tracks several things: > > All of these apply to both locally originated requests and remotely > originated requests? And are they for only our direct peers? > > > > - What is the overall average load reported by responses this node has > > received > > - What is the average load reported by responses this node has received, > > per remote node > > - What is the average load reported by responses this node forwarded, per > > remote node > > Ahhh, this one could be interesting - you could use it to penalise nodes > which spam excessively.
Actually, thinking about it, I don't think this will work. Requests are usually distributed evenly across the keyspace, and downstream nodes only know they are from this node - not which previous node they are from. So the pain will be shared across all the peers sending us requests, including our own local requests, and won't be identifiable as due to any single node. You have to do it by volume, not by reported load. -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 198 bytes Desc: This is a digitally signed message part. URL: <https://emu.freenetproject.org/pipermail/devl/attachments/20110829/0761719f/attachment.pgp>
