Solving the Mystery of Link Imbalance: A Metastable Failure State at Scale

Re:Solving the Mystery of Link Imbalance: A Metastable Failu... by donavanm on Wednesday November 26, 2014 @02:14AM (#8661397)

Color me confused. Just a week ago they posted "We also have server-side means to “hash away” and route around trouble spots, if they occur."

https://code.facebook.com/posts/360346274145943/introducing-...

Does the server side flow hash manipulation dependent on ip tuple manipulation? Only enabled for some hosts/devices? A bit disappointed, was hoping for clever dscp or mpls tag manipulation. If they rely on new streams with specific src ports its a lot less interesting, and less useful for long lived connections.

[ Parent | on HN ]

Re:Solving the Mystery of Link Imbalance: A Metastable Failu... by mcpherrinm on Wednesday November 26, 2014 @04:03AM (#8661600)

This problem has been ongoing for two years: the post you linked described their new data center design, which may not even be online yet.

[ Parent | on HN ]

Re:Solving the Mystery of Link Imbalance: A Metastable Failu... by hueving on Wednesday November 26, 2014 @08:51AM (#8662261)

They explicitly mention in the article that this may not apply to their new data center.

[ Parent | on HN ]