On Tue, 4 Nov 2003 [EMAIL PROTECTED] wrote:

> Hello Robots list
> 
> Well maybe this list can finally put to rest a great deal of the "30 second wait" 
> issue.
> 
> Can we all collectively research into an adaptive routine?

Interesting topic...

With one hat on, I operate one of those little servers with thousands of 
pages. I guess I'm lucky; I don't pay bandwidth and the connection is 
naturally limited to a T-1.

With my other hat on, at TRIUMF we have started to have issues with 
bandwidth management. We now have a gigabit link to the research networks 
with no byte charges, so don't care if someone sucks our site from ESnet
(CERN, Fermilab, Los Alamos etc.).
However, we have a 100Mbit link to commercial backbone and can't afford to 
fill it - P2P is a problem. Our current "solution" is to limit outgoing
traffic to 1Mbit - except our central webserver and mailserver.
So we would be financially embarrassed if a lot of robots from the 
commercial side all decided to mirror our servers.

I guess what I'm trying to say is that the issue of instantaneous 
hit rate is not really a problem any more, but that volume might be.
However, I guess that the people running robots also have finite storage 
and have to pay for bandwidth, so that perhaps this is a non-problem 
except where there is a serious asymmetry between source and destination.


-- 
Andrew Daviel, TRIUMF, Canada
Tel. +1 (604) 222-7376
[EMAIL PROTECTED]


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