Re: Odd congestion window behaviour [ was: Draft email to freebsd-net ]

2007-08-31 Thread Mark Allman
Sorry, I am way behind. > IMO if you want to follow the true spirit of RFC3390 and RFC2581 then > yes.. you should ONLY use RFC3390 (or 2581) to set your initial > cwnd. > > I am adding Mark Allman on this to get his opinion.. Mark, here > is your big chance to chime in on something that has had

Re: Odd congestion window behaviour [ was: Draft email to freebsd-net ]

2007-07-17 Thread James Healy
>>I.e. where we keep past connection state and use that >>as a reference for the initial cwnd. I asked Mark about >>this in the past.. and he said that his paper was >>mis-interpreted and this is incorrect behavior. If you >>have no connections up to a peer you should not use any >>past value for t

Re: Odd congestion window behaviour [ was: Draft email to freebsd-net ]

2007-07-17 Thread Randall Stewart
James Healy wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 I.e. where we keep past connection state and use that as a reference for the initial cwnd. I asked Mark about this in the past.. and he said that his paper was mis-interpreted and this is incorrect behavior. If you have no connec

Re: Odd congestion window behaviour [ was: Draft email to freebsd-net ]

2007-07-16 Thread James Healy
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 > I.e. where we keep past connection state and use that > as a reference for the initial cwnd. I asked Mark about > this in the past.. and he said that his paper was > mis-interpreted and this is incorrect behavior. If you > have no connections up to a

Re: Odd congestion window behaviour [ was: Draft email to freebsd-net ]

2007-07-16 Thread Randall Stewart
James Healy wrote: This behaviour seems a little odd to us - can anyone shed some light on it? Our assumption is that the use of the hostcache is designed to increase performance where appropriate by seeding the initial cwnd based on past experience. For this section of code to return a cwnd th

Odd congestion window behaviour [ was: Draft email to freebsd-net ]

2007-07-15 Thread James Healy
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Whoops, we forgot to update the subject of our email. Our previous email isn't a draft. James James Healy wrote: > We've recently been doing some TCP congestion control research, and have > written a small logging module for 6.2 that outputs the cwn