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ietf-wg-mops / draft-ietf-mops-streaming-opcons

drafts for the mops IETF working group
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Latency categories are coming up mildly controversial in wider review #130

Closed GrumpyOldTroll closed 2 years ago

GrumpyOldTroll commented 2 years ago

For example, see:

It might be worth thinking a bit about whether there's any worthwhile improvements we can make here before it's too late. As much as I don't want to chase a moving target, I also don't want to ship something that lacks consensus.

acbegen commented 2 years ago

I think chances for a consensus are more likely if we keep it simple, see my suggested text here.

GrumpyOldTroll commented 2 years ago

I'll integrate ali's comments, turn this into a new pr, and pull it: https://github.com/ietf-wg-mops/draft-ietf-mops-streaming-opcons/commit/8942fbb771636194ab42bd29c15e65cb9e05a34b

GrumpyOldTroll commented 2 years ago

One more thing we should perhaps integrate to help with this is to clarify that "Ultra Low Latency" is an industry term of art in segmented streaming video delivery, and that's basically where this category's name came from.

(There's many example usages posted.)

GrumpyOldTroll commented 2 years ago

PS: Came up again from @michael-scharf 's review (https://mailarchive.ietf.org/arch/msg/mops/eGGPYW2vytPsLwRBlJ38MezPFh0/)

Section 4. Latency Considerations and Section 4.1. Ultra Low-Latency

I am surprised by the definition "ultra low-latency (less than 1 second)", as well as some of the other numbers. For other real-time communication use cases, "ultra low-latency" would probably imply a latency requirement of the order of one millisecond. For instance, isochronous traffic for motion control in industrial networks may require a latency of 1 ms, and such "ultra-low latency" requirements are discussed elsewhere, e.g., in the DetNet WG. The terminology in this section should be better explained to readers dealing with networked systems with much harder latency requirements. And a reference should be added for these definitions in the context of video streaming.

GrumpyOldTroll commented 2 years ago

closed via https://github.com/ietf-wg-mops/draft-ietf-mops-streaming-opcons/pull/136