That makes sense, but it's a bit of a catch-22: In order to not saturate the connection you need to know what's available. But to know what's available, you need to saturate the connection.
I'm curious if there's another way. -david > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > Sent: Saturday, April 01, 2006 6:14 PM > To: Peer-to-peer development.; David Barrett > Cc: 'Peer-to-peer development.' > Subject: RE: [p2p-hackers] Hard question.... > > I've missed part of this conversation but here is my two cents on this > specific > question - just keep increasing the amount of data that you are sending > in > bursts and the speed of those bursts until you achieve a certain target > error > rate. i.e. 2% or whatever. After bumping up against failures, you should > be > able to get a sense of an optimal rate. Be sensitive to TCP congestion at > the > same time. I back off if the round trip time starts spiking. > > Thanks > -greg > > > Quoting David Barrett <[EMAIL PROTECTED]>: > > > -----Original Message----- > > > From: coderman > > > Sent: Saturday, April 01, 2006 5:20 PM > > > To: Peer-to-peer development. > > > Subject: Re: [p2p-hackers] Hard question.... > > > > > > On 4/1/06, David Barrett <[EMAIL PROTECTED]> wrote: > > > > ... > > > > Incidentally, how are you measuring "available bandwidth"? > > > > > > right now i pass the buck and let the user pick a suitable limit. if > > > excessive loss is detected continuously the stack can cut by half or > > > exit with error. > > > > > > i'm still looking for better ways to do this; ideally it would be tied > > > to kernel level shaping and based on a historical view of channel > > > capacity. > > > > Got it. Has anyone else had good experience trying to measure this > > automatically in the real world? > > > > -david > > > > > > _______________________________________________ > > p2p-hackers mailing list > > p2p-hackers@zgp.org > > http://zgp.org/mailman/listinfo/p2p-hackers > > _______________________________________________ > > Here is a web page listing P2P Conferences: > > http://www.neurogrid.net/twiki/bin/view/Main/PeerToPeerConferences > > > _______________________________________________ p2p-hackers mailing list p2p-hackers@zgp.org http://zgp.org/mailman/listinfo/p2p-hackers _______________________________________________ Here is a web page listing P2P Conferences: http://www.neurogrid.net/twiki/bin/view/Main/PeerToPeerConferences
