- From: Richard Bradbury via GitHub <sysbot+gh@w3.org>
- Date: Thu, 22 Nov 2018 19:00:33 +0000
- To: public-web-and-tv@w3.org
> QUIC is not IP multicast-compatible (yet). Although there are early stage proposals such as [1], they have been shown to significantly degrade IP-multicast performance versus the standardized ATSC transport protocol ROUTE (see slide 5 of presentation in [2]). I assume you're referring to this claim on your slide 5: > ROUTE is more efficient than QUIC > - About 10% less overhead per packet In a recent comparison of media transport protocols done by the DVB Project we measured that the average protocol overhead of ROUTE was ~20 bytes per packet and the average protocol overhead of multicast QUIC was ~22 bytes per packet, although because QUIC uses variable-length encoding for some fields, it can be lower than this. I agree that these bald numbers suggest that the overhead of QUIC is ~10% higher than ROUTE. However, a difference of two bytes in a 1500-byte packet is only a 0.13% difference in the real world. To describe this to a significant degradation in IP multicast performance would be overegging the pudding. -- GitHub Notification of comment by rjb1000 Please view or discuss this issue at https://github.com/w3c/media-and-entertainment/issues/1#issuecomment-441104664 using your GitHub account
Received on Thursday, 22 November 2018 19:00:35 UTC