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by BlueTemplar 1525 days ago
https://news.ycombinator.com/item?id=15781788

> The Intel Puma 6 and Puma 7 chipsets have a performance issue in a part of the packet processing that is specific to TCP/IP, which went undetected for awhile because "ping" packets are not TCP/IP. [...]

(And/or because just running "ping" a few times might not catch the issue if it doesn't happen at the same time as the lag spike.)