Re: Latency, TCP ACKs and upload needs

On 20/04/16 16:27, Leo Bicknell wrote:

90%+ of the stacks deployed will be too small. Modern Unix generally has "autotuning" TCP stacks, but I don't think Windows or OS X has those features yet (but I'd be very happy to be wrong on that point). Regardless of satellite uplink/downlink speeds, boxes generally need to be tuned to get maximum performance on satellite.

Windows also has TCP buffers auto-tuning since Windows 7/Vista up to 16MB, however only receiver-side tuning on their client versions, for sender-side tuning you will need a server version. That means uploading stuff from a regular windows "client" machine to a remote host with a large RTT will be very slow. -- Chris