Re: [iccrg] AIMD versus AIAD
"K. K. Ramakrishnan" <kk@cs.ucr.edu> Fri, 20 November 2020 15:40 UTC
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From: "K. K. Ramakrishnan" <kk@cs.ucr.edu>
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Date: Fri, 20 Nov 2020 07:40:37 -0800
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Subject: Re: [iccrg] AIMD versus AIAD
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Folks, When we were working on the DECbit work (ECN has many similarities), we focused on the unit of time over which all the competing flows modified their demand so as to eventually converge to a fair and efficient operating point, independent of where they started from. The fairness consideration was based on the action taken by each source over that unit of time, which based on the feedback control system model we had informally in our mind, was the dominant RTT. Rather than focusing on the action at the source on each individual packet/ack, since we know that each source could potentially have fewer or more packets in that unit of time, we look at the control action over an RTT, even if on each ack. the source took small steps. I used to think in similar terms as Aurel Lazar had been with their bang-bang flow control work. So, the amount of increase and decrease we were looking at was over the dominant RTT (maybe we should have focused more on RTT heterogeneity then, but that came a bit later, when we looked at Selective Feedback (DEC TR 508), but that is another matter...). Thanks, K. K. Ramakrishnan -- K. K. Ramakrishnan Professor Dept. of Computer Science and Engineering University of California, Riverside Rm. 332, Winston Chung Hall Tel: (951) 827-2480 Web Page: http://www.cs.ucr.edu/~kk/
- [iccrg] AIMD versus AIAD Jonathan Morton
- Re: [iccrg] AIMD versus AIAD Jana Iyengar
- Re: [iccrg] AIMD versus AIAD daihuichen
- Re: [iccrg] AIMD versus AIAD Jonathan Morton
- Re: [iccrg] AIMD versus AIAD Luca Muscariello
- Re: [iccrg] AIMD versus AIAD Saverio Mascolo
- Re: [iccrg] AIMD versus AIAD K. K. Ramakrishnan
- Re: [iccrg] AIMD versus AIAD Bob Briscoe
- Re: [iccrg] [EXTERNAL] Re: AIMD versus AIAD Praveen Balasubramanian
- Re: [iccrg] AIMD versus AIAD Bob Briscoe