Monday, December 14, 2020

Repost: Drawbacks and Pitfalls of Cut-Through Switching

Minh Ha left a great comment describing additional pitfalls of cut-through switching on my Chasing CRC Errors blog post. Here it is (lightly edited).

Ivan, I don’t know about you, but I think cut-through and deep buffer are nothing but scams, and it’s subtle problems like this [fabric-wide crc errors] that open one’s eyes to the difference between reality and academy. Cut-through switching might improve nominal device latency a little bit compared to store-and-forward (SAF), but when one puts it into the bigger end-to-end context, it’s mostly useless.


No comments:

Post a Comment