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    Thanks for this - this got rid of the error for me; and correctly copied a 2G file from a Ubunutu to a Windows Share. Commented Jan 24, 2013 at 13:31
  • I've tried this and other variations of adjusting the values for SO_RCVBUF and SO_SNDBUF without luck. The file I'm trying to upload is about 8gig over a local network with zero packet loss. Commented Feb 29, 2016 at 8:16
  • specifying options SO_RCVBUF=xxxxx SO_SNDBUF=xxxxxx with any values reduces transfer speed in my env 10 times B-(. e.g. 15'000 down to ~1'600 KiloBytes/sec! Commented Apr 25, 2024 at 18:52