Re: [Mops] Reminder: Video Ingest over QUIC Side Meeting Friday 7/30 18:00 UTC

["Ali C. Begen" <[e-mail]>]

> On Jul 30, 2021, at 5:42 AM, Ian Swett <ianswett=[e-mail]> wrote:
> 
> To frame this in statistical terms, the sum of multiple normal distributions is a normal distribution with the sum of the means and a sum of the variances(https://en.wikipedia.org/wiki/Sum_of_normally_distributed_random_variables).  Since the standard deviation is the square root of the variance, the standard deviation is dominated by the largest source of variation, and if each link introduces some variance, it's really only the one that introduces the most variation that matters.

Sure, but that assumes independent distributions which does not much apply in this case. But the point is still valid, there will likely be 1-2 problematic hops in the entire ~10-20 e2e path.

>  Given no link knows whether it's the dominant source of variation on the path, I'd suggest every link pass along packets as soon as possible.  

Yes.

> Obviously, link-layer error correction and other approaches which increase reliability without introducing delay are still welcome and valuable.

+1, though improved reliability almost always comes at the cost of increased delay (rtx, fec, etc.).