TCP Pace Yourself
Published Mar 14, 2014
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For example, I've seen that with this update to our TCP stack that with 8:1 congestion, connected to a white-box TOR switch that has a very small buffer size and no RED and no flow control the switch that we caused the switch to drop ~ .01% packets at fairly high concurrency. A TCP stack without rate pacing and with a small switch buffer would perform >50x worse than that at 8:1 congestion.
This was constant, overdriven load of 80G of traffic pointed at a 10G interface on a white-box TOR switch.