[core-dev] [limewire jira] Commented: (CORE-2) Find a way to transmit the number of open upload slots efficiently to the downloaders

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The following comment has been added to this issue:

 Author: Adam Fisk
Created: Fri, 25 Jun 2004 3:37 PM
   Body:
There's another way to tackle this problem that may be fruiful to explore.  The issue arises from the fact that nodes return far more search results than they have upload slots for.  Sure, LW stops returning results when slots are at or near full, but a thousand results could have gone out in the 10 seconds before we reached this point.

We could be far more intelligent about returning those results in the first place.  For example, a node could dynamically track the average percentage of the time that returning a results ends up translating into a download request.  Say, for example, a file is requested over HTTP for 5% of search results returned.  The node could then predict that sending 100 results would translate into 5 download requests. As such, a node could avoid sending thousands of results because it can relatively accurately predict that it will get download requests in the near future.

This could save a great deal of bandwidth for query hits while also increasing the success rate for downloads. 

You could even get in to tracking HTTP request rates for each hop in the search result, as it's possible that replying to hops=1 searches results in more download requests because the result may appear higher up on the user's screen, for example.  Ideally, you'd even track it for each file, but it's hard to say how fine-grained you'd want to get.

Forgive me if the GDF and or you guys have already discussed this in detail, but this is the route I'd tend to explore.

-adam 

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