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Avoiding unintended connection failures with SO_REUSEPORT

Avoiding unintended connection failures with SO_REUSEPORT

Posted Apr 25, 2021 21:56 UTC (Sun) by Sesse (subscriber, #53779)
Parent article: Avoiding unintended connection failures with SO_REUSEPORT

I'm a bit confused. What good does it do that SYN processing is lockless, if you're still going to serialize it into a single listener?

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Avoiding unintended connection failures with SO_REUSEPORT

Posted Apr 26, 2021 16:13 UTC (Mon) by wtarreau (subscriber, #51152) [Link]

It's essential to deal with high the SYN rates that happen during SYN floods (i.e. all the time on high traffic sites). You want that part to be ultra-scalable. The difference can be 1 vs 10 Mpps.


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