How far do you all go in your network tuning? Turn all the knobs, default only, sometimes in a blue moon?
I know I've had to adjust firewall timeouts, jumbo frames (not always a great idea), flow-control, MTU/MSS, tried various window sizes in iperf, etc. Does anyone go so far as to adjust TCP directly on a host? If so, how do you go about that process and how do you deploy it? How does one find out which TCP algorithm is best suited for a flow?
Low-latency seems really interesting but I have no idea where to start.
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